Abstract: [Object] To provide a wireless communication apparatus capable of transmitting and receiving data in accordance with an optimum length of a short transmission time interval in a terminal apparatus among a plurality of lengths of a short transmission time interval a the time of transmission, and reception of data at a short transmission time interval shorter'than an existing transmission time interval. [Solution] Provided is a wireless communication apparatus including: a frame generation unit configured to generate a frame including a plurality of subframes; a transmission unit configured to transmit the generated frame to another communication apparatus; and a notification unit configured to notify of information regarding a plurality of lengths of a short transmission time interval, which is a transmission time interval shorter than one subframe period in the subframe.

Abstract: An apparatus is disclosed that includes a processor configured to acquire subarray information indicating a plurality of subarrays usable for multilayer Multi-Input Multi-Output (MIMO), notify a terminal apparatus of information related to the subarray, wherein the terminal apparatus is a terminal apparatus that performs a report related to a combination of two or more subarrays included in the plurality of subarrays, and wherein the plurality of subarrays includes two or more subarrays that share one or more antenna ports.

Abstract: A base station includes a selection unit configured to select a second beam appropriate for communication with a terminal apparatus on a basis of reception results of a plurality of second reference signals transmitted or received using a plurality of the second beams having irradiation ranges obtained by subdividing an irradiation range of a first beam which is appropriate for communication with the terminal apparatus and which is selected on a basis of reception results of a plurality of first reference signals transmitted using a plurality of the first beams which are formed by a plurality of antennas and which are set in advance; and a notification unit configured to notify the terminal apparatus of information indicating arrangement relationship between respective pluralities of first and second resources corresponding to pluralities of the first and second beams for the first and second reference signals.

Abstract: [Object] To provide a mechanism capable of more appropriately ascertaining an interference condition of a data signal. [Solution] An apparatus includes: a processing unit that feeds back a channel quality indicator (CQI) of a serving base station, which is calculated on a basis of results of measuring reference signals received from the serving base station and a neighbor base station and information related to a power difference between the reference signal and a data signal of the neighbor base station, to the serving base station.

Abstract: In a system in which a wireless access network and another network are connected to each other, an accurate fee is charged in a case where data held in an application server disposed in the wireless access network is used. The application server holds an application and data relating to the application. A usage mode information generating unit generates usage mode information which is information relating to a usage mode when the wireless terminal uses the held data. A network data usage amount measuring unit measures a network data usage amount when the wireless terminal uses data on another network via a wireless access network connected to the wireless terminal. A fee charging unit charges a fee on the basis of the measured network data usage amount and charge a fee on a basis of the generated usage mode information.

Abstract: [Object] To make it possible to select a cell that is more preferable for a terminal device in an environment in which beamforming is performed. [Solution] There is provided a device including: an acquiring unit configured to acquire received quality information indicating received quality of a reference signal in a terminal device; and a control unit configured to perform cell selection for the terminal device based on the received quality information. When a predetermined condition related to use of weight sets for beamforming by a base station is satisfied, the control unit does not perform the selection based on the received quality information.

Abstract: [Object] To enable interference of directional beams between cells to further decrease. [Solution] Provided is an apparatus including: an acquisition unit that acquires information about a directional beam that is provided from a neighbor base station of a base station, the directional beam serving as an interference source for a terminal apparatus connected to the neighbor base station among a plurality of directional beams which is able to be formed by the base station; and a control unit that decides an operation of the base station regarding transmission of a signal over the directional beam on the basis of the information.

Abstract: An apparatus including an acquisition unit that acquires setting information from a base station, and a selection support unit that transmit an uplink reference signal to be used for selecting a beam to be used by the base station in downlink transmission using at least one first unit frequency band of a group including a plurality of unit frequency bands indicated by the setting information.

Abstract: [Problem] To enable measurement of interference between a downlink signal and an uplink signal transmitted in different cells in a more suitable manner. [Solution] A communication device includes a communication unit that performs wireless communication with a first terminal device located within a communication range, an acquisition unit that acquires, from another base station, first information related to a second terminal device located within a communication range of the other base station, and a notification unit that notifies the first terminal device of second information for measuring interference of an uplink signal transmitted from the second terminal device to the other base station with a downlink signal transmitted to the first terminal device, based on the acquired first information.

Abstract: There is provided a communication control apparatus including a radio communication unit that provides a second radio communication service within a cell in which a first base station provides a first radio communication service, and a control unit that, when an operation mode of the radio communication unit is made to transition from a first mode to a second mode in which power is less consumed than in the first mode, switches the operation mode to the second mode after stepwisely reducing transmission power of a reference signal to be transmitted from the radio communication unit.

Abstract: [Object] To suppress the overhead related to the transmission of the reference signal when beamforming is performed. [Solution] Provided is an apparatus, including: an acquiring unit configured to acquire antenna-related information related to an antenna port allocated to a directional beam for transmission by the directional beam; and a notifying unit configured to notify a terminal apparatus of the antenna-related information.

Abstract: [Object] To provide a device capable of performing efficient resource sensing in V2X communication. [Solution] Provided is a device including a processing unit configured to perform sensing using one of first sensing of sensing resources for a predetermined period and selecting communication resources on a basis of a result of the sensing and second sensing of selecting communication resources on a basis of a result of decoding control information transmitted by another user with reference to a mapping table at the time of the first sensing and the second sensing.

Abstract: There is provided a device including a control unit that controls transmission of downlink data in a manner that the transmission of the downlink data is performed using a first frequency band shared by a plurality of wireless communication systems including a cellular system. The control unit controls retransmission of the downlink data in a manner that the retransmission of the downlink data is performed using a second frequency band for the cellular system.

Abstract: An apparatus including: a first transmission processing unit that generates transmission signal sequences of multiple power layers that are to be multiplexed using power allocation; and a second transmission processing unit that processes a transmission signal sequence of a power layer using an interleaver, a scrambler, or a phase coefficient corresponding to the power layer for each of one or more of the multiple power layers. The apparatus improves accuracy of decoding of a desired signal when multiplexing/multiple access is performed using power allocation.

Abstract: [Object] To provide a mechanism in which Listen-Before-Talk (LBT) can be efficiently executed using a millimeter-wave band. [Solution] An apparatus including: a processing unit configured to infer, on a basis of a result of LBT related to at least one first unit frequency band included in a group that includes a plurality of unit frequency bands, a result of LBT related to a second unit frequency band other than the first unit frequency band included in the group.

Abstract: A device includes circuitry that dynamically changes an uplink/downlink configuration of a time division duplex (TDD) carrier. The circuitry notifies a terminal device of a radio resource for device-to-device communication appropriate for the uplink/downlink configuration. The radio resource is a radio resource of at least one uplink subframe of the uplink/downlink configuration.

Abstract: [Object] To provide a wireless communication device which enables paging to be effectively performed with respect to a terminal device that is a target of paging in a system in which another terminal device acts like a cell. [Solution] Provided is a terminal device including: an acquisition unit configured to acquire a paging message from a base station; and a control unit configured to execute paging with respect to one or more other terminal devices that perform wireless communication with the base station via the terminal device on the basis of the paging message acquired by the acquisition unit.

Abstract: In a system in which a wireless access network and another network are connected to each other, an accurate fee is charged in a case where data held in an application server disposed in the wireless access network is used. The application server holds an application and data relating to the application. A usage mode information generating unit generates usage mode information which is information relating to a usage mode when the wireless terminal uses the held data. A network data usage amount measuring unit measures a network data usage amount when the wireless terminal uses data on another network via a wireless access network connected to the wireless terminal. A fee charging unit charges a fee on the basis of the measured network data usage amount and charge a fee on a basis of the generated usage mode information.

Abstract: [Object] To make it possible to select a cell that is more preferable for a terminal device in an environment in which beamforming is performed. [Solution] There is provided a device including: an acquiring unit configured to acquire received quality information indicating received quality of a reference signal in a terminal device; and a control unit configured to perform cell selection for the terminal device based on the received quality information. When a predetermined condition related to use of weight sets for beamforming by a base station is satisfied, the control unit does not perform the selection based on the received quality information.

Abstract: [Problem to be Solved] To provide a communication apparatus that is novel, enhanced, and able to improve communication efficiency through improvement of an existing slice construction method. [Solution] There is provided a communication apparatus including a communication control section that performs, using a network address configured by m bytes, communication control on one or more network slices, and the network address has a prefix section that includes, in a portion of high-order n bytes, a slice number that identifies the one or more network slices and a subnet number in the one or more network slices.