Abstract: [Object] To make it possible to use a combination of subarrays desirable for multilayer MIMO. [Solution] Provided is an apparatus, including: an acquiring unit configured to acquire subarray information indicating a plurality of subarrays usable for multilayer Multi-Input Multi-Output (MIMO); and a control unit configured to notify a terminal apparatus of the subarray information.

Abstract: [Object] To make it possible to perform measurement reporting suitable for an environment in which the on/off state of a cell is switched. [Solution] There is provided a device including: an acquiring unit configured to acquire information indicating that a serving cell is scheduled to be in an off state; and a control unit configured to perform measurement reporting before the serving cell is in the off state.

Abstract: The present application makes it possible to protect a beacon transmitted by an access point of a wireless LAN in a frequency band shared between a cellular system and the wireless LAN. An exemplary implementation of the present application includes a device comprising circuitry configured to acquire information indicating a period prepared at a beacon interval of a wireless LAN, and a first control unit configured to stop wireless communication of a base station of a cellular system in a frequency band shared between the cellular system and the wireless LAN over the period.

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: There is provided a communication control device including an acquisition unit configured to acquire system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell, and a control unit configured to control downlink transmission of the system information in the macro cell. The control unit notifies a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.

Abstract: There is provided a communication control device including a control unit configured to control wireless communication by a terminal device capable of performing wireless communication using one primary frequency band and one or more secondary frequency bands when the terminal device is located within a macro cell. When the terminal device is located within a small cell overlapped by the macro cell partially or entirely and the macro cell, the control unit controls the terminal device in a manner that one of one or more frequency bands for wireless communication in one of the macro cell and the small cell is used as the primary frequency band, and each of one or more frequency bands for wireless communication in the other of the macro cell and the small cell is used as the secondary frequency band.

Abstract: [Object] To make it possible to reduce the load related to MBMS for the terminal device supporting carrier aggregation. [Solution] There is provided an apparatus including an acquisition unit configured to acquire specific information used to specify a physical multicast channel (PMCH) of two or more component carriers including a first component carrier, and a control unit configured to control transmission of the specific information on the first component carrier.

Abstract: To select cell more appropriately when transmission over directional beam is performed, there is provided an apparatus comprising: an acquisition unit that acquires information for correcting a result of measurements of a reference signal which is used for selecting a cell and transmitted over a plurality of directional beams in different directions; and a control unit that notifies a terminal apparatus of the information.

Abstract: Provided is a method for controlling a handover from a first base station to a second base station by a user equipment that performs radio communication over a communication channel formed by aggregating a plurality of component carriers, wherein scheduling information on each component carrier is transmitted to the user equipment according to either of a straight scheduling method and a cross scheduling method, and the method includes at the first base station, commanding first the user equipment to perform a handover from the first base station to the second base station on a second component carrier to be operated according to the straight scheduling method in the second base station, when it is determined that a handover on a first component carrier following the cross scheduling method is to be executed.

Abstract: In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.

Abstract: To enable a reduction in the effect of backhauling on wireless communications in the case of carrier aggregation, provided herein is a communication control device that acquires information about a terminal device that uses one component carrier of a macro cell as a primary component carrier, sets one or more component carriers of a small cell partially or fully overlapping with the macro cell as an additional component carrier to be used additionally by the terminal device, and sets one component carrier among the one or more component carriers as a special component carrier on which the terminal device is able to transmit uplink control information on an uplink control channel, wherein the uplink control information includes at least one of an acknowledgement (ACK) and a negative acknowledgement (NACK) regarding reception of a downlink signal, an uplink scheduling request, or periodically reported channel state 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: [Object] To enable a frequency band shared between wireless communication of a cellular system and wireless communication conforming to a wireless LAN standard to be more appropriately used in the cellular system. [Solution] There is provided a device including an acquisition unit configured to acquire information indicating a terminal device which is a device candidate for performing wireless communication of a cellular system using a frequency band shared between the wireless communication of the cellular system and wireless communication conforming to a wireless local area network (LAN) standard, and a control unit configured to notify the terminal device that the terminal device is the device candidate.

Abstract: A communication control device including: an acquisition unit configured to acquire band use information indicating which cell of a macro cell and a small cell partially or entirely overlapping with the macro cell uses each of a plurality of frequency bands used by one of the macro cell and the small cell; and a communication control unit configured to notify a terminal device of the band use information. The communication control device improves radio communication of a terminal device when a small cell is disposed.

Abstract: [Object] To make it possible to retransmit downlink data with a high degree of certainty when a frequency band shared by a plurality of wireless communication systems is used in a cellular system. [Solution] Provided is a device, including: a control unit configured to control 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: [Object] To make it possible to use a combination of subarrays desirable for multilayer MIMO. [Solution] Provided is an apparatus, including: an acquiring unit configured to acquire subarray information indicating a plurality of subarrays usable for multilayer Multi-Input Multi-Output (MIMO); and a control unit configured to notify a terminal apparatus of the subarray information.

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 enable a frequency band shared between wireless communication of a cellular system and wireless communication conforming to a wireless LAN standard to be more appropriately used in the cellular system. [Solution] There is provided a device including an acquisition unit configured to acquire information indicating a terminal device which is a device candidate for performing wireless communication of a cellular system using a frequency band shared between the wireless communication of the cellular system and wireless communication conforming to a wireless local area network (LAN) standard, and a control unit configured to notify the terminal device that the terminal device is the device candidate.

Abstract: [Object] To enable a terminal device to more easily maintain synchronization for communication of a cellular system in a frequency band shared between the cellular system and a wireless LAN. [Solution] There is provided a device including: a communication processing unit configured to perform communication of a cellular system in a frequency band shared between the cellular system and a wireless LAN within a first period and stop the communication of the cellular system in the frequency band within a second period. The first period is one or more subframes including a subframe in which a synchronization signal of the cellular system is transmitted, and the second period is one or more other subframes not including the subframe in which the synchronization signal is transmitted.

Abstract: [Object] To provide a mechanism capable of evaluating the quality of beams in an environment in which beam tracking is provided. [Solution] A terminal apparatus, including: a communication unit configured to perform communication with a base station configured to form beams and perform communication; and a control unit configured to receive a downlink signal transmitted from the base station using the beams and thereby acquire quality information indicating quality related to a direction of the beams used for transmitting the downlink signal.