Abstract: A device including an acquisition unit configured to acquire information indicating an uplink/downlink configuration of a time division duplex (TDD), and a control unit configured to notify the uplink/downlink configuration to a terminal device. The control unit controls radio communication in a half duplex frequency division duplex (HD-FDD) with respect to the terminal device according to the uplink/downlink configuration.

Abstract: [Object] To make it possible to start use of a frequency band used in a wireless LAN in a cellular system more quickly. [Solution] Provided is a device including: an acquisition unit configured to acquire a result of discovery of a wireless local area network (LAN) access point that uses a frequency band; and a control unit configured to control monitoring of a radar wave in the frequency band based on the result of the discovery before use of the frequency band by a base station of a cellular system starts.

Abstract: [Object] To make it possible to perform uplink transmission using appropriate transmission power in the case where a beamforming process is performed. [Solution] There is provided a communication control apparatus including an acquisition unit configured to acquire control information for determining uplink transmission power; and a communication control unit configured to control transmission of the control information to a terminal apparatus. The control information includes adjustment information for adjusting transmission power according to an antenna gain in a case where a beamforming process is performed.

Abstract: Provided is a communication control device that controls radio communication conducted by a terminal device according to a time-division duplex (TDD) scheme on a radio communication network, the communication control device including a configuration section that configures, for each frame that includes a plurality of subframes, a link direction configuration expressing a link direction per subframe for the radio communication. The configuration section configures a timing of control signaling in a second link direction which is associated with data transmission in a first link direction in the radio communication, and which is opposite to the first link direction, independently of the configured link direction configuration.

Abstract: Provided is a communication control device that controls radio communication conducted by one or more terminal devices according to a time-division duplex (TDD) scheme, the communication control device including a configuration section that configures, for each frame that includes a plurality of subframes, a link direction configuration expressing a link direction per subframe, and a control section that signals the link direction configuration configured by the configuration section to each terminal device. The configuration section configures a first link direction configuration for a first terminal group, and configures a second link direction configuration for a second terminal group, and the control section signals the first link direction configuration to a terminal device belonging to the first terminal group on a first cycle, and signals the second link direction configuration to a terminal device belonging to the second terminal group on a second cycle that is shorter than the first cycle.

Abstract: There is provided a communication control device including a radio communication unit which communicates with one or more terminal devices in a cell over a channel in which a link direction is allowed to be dynamically set for each sub-frame which is a unit of time in radio communication, and a control unit which controls allocation of communication resources to the terminal device based on the setting of the link direction of the channel and a location of the terminal device in the cell.

Abstract: Provided is a communication control device that controls radio communication conducted by a terminal device according to a time-division duplex (TDD) scheme on a radio communication network, the communication control device including a configuration section that configures, for each frame that includes a plurality of subframes, a link direction configuration expressing a link direction per subframe for the radio communication. The configuration section configures a timing of control signaling in a second link direction which is associated with data transmission in a first link direction in the radio communication, and which is opposite to the first link direction, independently of the configured link direction configuration.

Abstract: Provided is a communication control apparatus including a communication unit configured to receive, from a base station of a radio communication system, grant information that specifies a resource for relay within a frequency resource assigned to a radio communication system operated with a frequency division duplex scheme, the resource for relay being granted to be used for relay of traffic, and a relay control unit configured to relay the traffic with a time division duplex scheme on the resource for relay during a period that is associated with the grant information.

Abstract: Provided is a communication control apparatus including a communication unit configured to receive, from a base station of a first radio communication system, grant information that specifies a resource for secondary use within a frequency resource assigned to the first radio communication system operated with a frequency division duplex scheme, and a communication control unit configured to operate a second radio communication system with a time division duplex scheme on the resource for secondary use during a period that is associated with the grant information.

Abstract: [Object] To enable a CP with a more appropriate length in MBSFN subframes to be used. [Solution] There is provided an apparatus including an acquisition unit configured to acquire a result of measurement of delay between identical signals transmitted in an MBSFN area, and a decision unit configured to decide a cyclic prefix length for an MBSFN subframe of the MBSFN area based on the result of the measurement.

Abstract: To enable multicast to a specific terminal group to be performed. There is provided an apparatus including an acquisition unit configured to acquire channel configuration information indicating a configuration of a multicast channel disposed in an MBSFN subframe for a specific terminal group, and a control unit configured to notify the specific terminal group of the channel configuration information.

Abstract: There is provided a communication control device including a radio communication unit which communicates with one or more terminal devices in a cell over a channel in which a link direction is allowed to be dynamically set for each sub-frame which is a unit of time in radio communication, and a control unit which controls allocation of communication resources to the terminal device based on the setting of the link direction of the channel and a location of the terminal device in the cell.

Abstract: [Object] To make it possible to automatically decide an MBSFN area to which a cell belongs. [Solution] There is provided an apparatus including an acquisition unit configured to acquire a result of measurement of a reference signal transmitted by one of a target base station and one or more other base stations, the result of the measurement being supplied by the other of the target base station and the one or more other base stations, and a decision unit configured to decide an MBSFN area to which a cell of the target base station belongs based on the result of the measurement.

Abstract: [Object] To make it possible to reduce an increase in the interference while reducing load involved in beamforming. [Solution] There is provided a communication control apparatus including an acquisition unit configured to acquire cell identification information assigned to an individual three-dimensional beam formed by a directional antenna capable of forming a three-dimensional beam, and a control unit configured to control transmission of a reference signal performed using the individual three-dimensional beam, on the basis of the cell identification information. The control unit controls the transmission so that the reference signal is transmitted in a limited portion of available resource blocks.

Abstract: [Object] To make it possible to perform uplink transmission using appropriate transmission power in the case where a beamforming process is performed. [Solution] There is provided a communication control apparatus including an acquisition unit configured to acquire control information for determining uplink transmission power; and a communication control unit configured to control transmission of the control information to a terminal apparatus. The control information includes adjustment information for adjusting transmission power according to an antenna gain in a case where a beamforming process is performed.

Abstract: [Object] To make it possible to perform on/off control suitable for individual base stations with a lighter load. [Solution] There is provided a communication control device including an acquisition unit configured to acquire information indicating a sleep mode selected for a target base station from a plurality of sleep modes for setting a base station in a sleep state, and an application unit configured to apply the sleep mode selected for the target base station to the target base station.

Abstract: [Object] To utilize the extension band in the band-filling efficiently. [Solution] There is provided a communication control apparatus including: a communication control unit that controls radio communication performed by one or more terminal apparatuses on a component carrier having a basic bandwidth. The communication control unit symmetrically sets extension bands to be added to the component carrier to excess frequency bands on an upper side and a lower side of the component carrier.

Abstract: [Object] To make it possible to reduce load involved in beamforming. [Solution] Provided is a communication control apparatus including: an acquisition unit configured to acquire a set of weight coefficients for forming a beam aimed at a terminal apparatus, for each of two or more antenna groups each including a portion of a plurality of antenna elements included in a directional antenna capable of forming a three-dimensional beam; and a determination unit configured to determine a set of weight coefficients for the plurality of antenna elements for forming a three-dimensional beam aimed at the terminal apparatus, on the basis of the sets of the weight coefficients for the two or more antenna groups.

Abstract: Provided is a radio base station including a terminal detection unit that detects an uplink signal of a first terminal serviced by another base station, a storage unit that stores an allocation priority of a radio resource for a predetermined period, and a resource allocation unit that allocates a radio resource to a second terminal serviced by the radio base station, using the allocation priority of the radio resource stored in the storage unit. When the terminal detection unit detects the uplink signal of the first terminal, the resource allocation unit preferentially allocates a radio resource of an uplink of a high allocation priority to the second terminal while lowering an allocation priority of a radio resource estimated to be used next for the uplink by the first terminal.

Abstract: Provided is a communication control method including: acquiring first information for identifying a resource for random access with respect to each of a plurality of TDD configurations each indicating a link direction of each subframe in a radio frame of a time division duplex (TDD) method, and second information for identifying a resource for random access with respect to each of the plurality of TDD configurations; and announcing the first information and report the second information. The resource for random access with respect to each of the plurality of TDD configurations, which is identified from the second information, includes the resource for random access with respect to any of the plurality of TDD configurations, which is identified from the first information.