Abstract: To reduce power consumption of a terminal. A base station including a generator that generates control information on controlling a power source of a communicator in a terminal that executes a wireless communication in a first communication method and a second communication method, the communicator being for executing the wireless communication in the second communication method, and a transmitter that transmits the control information to the terminal that controls the power source of the communicator based on the control information.

Abstract: To reduce power consumption of a terminal. A terminal including: a first communicator that performs wireless communication by a first communication method; a second communicator that performs wireless communication by a second communication method; a standby determiner that determines a communication method to be used for standby; and a power source controller that controls a power source of the second communicator on the basis of the communication method determined by the standby determiner.

Abstract: A communication system is for improving utilization efficiency of radio resources. The communication system includes a base station device and a plurality of terminal devices that communicate with the base station device. The base station device includes a first control unit that assigns radio resources including at least one or more resource blocks to at least one of the plurality of terminal devices. The at least one of the plurality of terminal devices comprises a second control unit that transmits transmission data by using at least some of the radio resources assigned to the at least one of the plurality of terminal devices.

Abstract: A base-station apparatus includes: a communicator that performs wireless communication; and a controller. During communication with at least a first terminal apparatus, when a communication volume used for communication that is newly stated with a second terminal apparatus becomes smaller than or equal to an un-used communication volume, the controller transmits, to a target terminal apparatus that is one of the first and second terminal apparatuses, a communication instruction for communication with a second base-station apparatus having a coverage range in which the target terminal apparatus is located, and when a communication volume used for communication with the target terminal apparatus exceeds the un-used communication volume, the controller transmits a callback instruction for callback from the second base-station apparatus to the base-station apparatus to the target terminal apparatus or the second base-station apparatus.

Abstract: A base station device includes: a communication unit configured to wirelessly communicate with a terminal device; a storage unit; and a control unit. The control unit is configured to refer to discontinuous reception information, stored in the storage unit, which indicates a plurality of discontinuous reception settings, transmit transmission data to the terminal device in at least a portion of a first reception period of time corresponding to at least one of the discontinuous reception settings, and transmit the transmission data to the terminal device in at least a portion of a second reception period of time corresponding to at least another one of the discontinuous reception settings in a case that it is determined that response information with respect to the transmitted transmission data is not received.

Abstract: A communication system is for improving utilization efficiency of radio resources. The communication system includes a base station device and a plurality of terminal devices that communicate with the base station device. The base station device includes a first control unit that assigns radio resources including at least one or more resource blocks to at least one of the plurality of terminal devices. The at least one of the plurality of terminal devices comprises a second control unit that transmits transmission data by using at least some of the radio resources assigned to the at least one of the plurality of terminal devices.

Abstract: A base-station apparatus includes: a communicator that performs wireless communication; and a controller. During communication with at least a first terminal apparatus, when a communication volume used for communication that is newly stated with a second terminal apparatus becomes smaller than or equal to an un-used communication volume, the controller transmits, to a target terminal apparatus that is one of the first and second terminal apparatuses, a communication instruction for communication with a second base-station apparatus having a coverage range in which the target terminal apparatus is located, and when a communication volume used for communication with the target terminal apparatus exceeds the un-used communication volume, the controller transmits a callback instruction for callback from the second base-station apparatus to the base-station apparatus to the target terminal apparatus or the second base-station apparatus.

Abstract: A terminal device includes: a communication unit configured to communicatively connect with a first network using a first frequency band or a second frequency band; a detection unit configured to detect communication of a second network that is performed using the second frequency band; an interference avoidance unit configured to perform a process of avoiding radio interference by the second network; and a control unit configured to perform control such that the interference avoidance unit performs the process of avoiding radio interference by the second network band in a case that an identifier identifying communication of the second network detected by the detection unit includes a specific identifier.

Abstract: A base station device includes: a communication unit configured to wirelessly communicate with a terminal device; a storage unit; and a control unit. The control unit is configured to refer to discontinuous reception information, stored in the storage unit, which indicates a plurality of discontinuous reception settings, transmit transmission data to the terminal device in at least a portion of a first reception period of time corresponding to at least one of the discontinuous reception settings, and transmit the transmission data to the terminal device in at least a portion of a second reception period of time corresponding to at least another one of the discontinuous reception settings in a case that it is determined that response information with respect to the transmitted transmission data is not received.

Abstract: A terminal device and a communication system which are capable of starting LAA communication with a lower possibility of interference are provided. A communication unit performs communication using each of a first network and a second network. A communication control unit notifies a base station device constituting the first network of allocated frequency band exclusion information indicating a frequency band to be excluded from frequency bands allocated to the terminal device, and controls the communication unit so as to connect to the base station device using a frequency band allocated by the base station device.

Abstract: A communication unit is configured to perform communication using a first frequency band or a second frequency band different from the first frequency band. A wireless environment measuring unit is configured to detect interference of radio waves used for the communication. A communication control unit is configured to control the communication. The communication control unit is configured to transmit, to a base station device which performs communication using the second frequency band, interference information about a frequency band in which the wireless environment measuring unit has detected interference or wireless environment information including a request for change of a frequency band used for the communication, the transmission being performed in a case that interference is detected in the first frequency band.

Abstract: A terminal device includes: a communication unit configured to communicatively connect with a first network using a first frequency band or a second frequency band; a detection unit configured to detect communication of a second network that is performed using the second frequency band; an interference avoidance unit configured to perform a process of avoiding radio interference by the second network; and a control unit configured to perform control such that the interference avoidance unit performs the process of avoiding radio interference by the second network band in a case that an identifier identifying communication of the second network detected by the detection unit includes a specific identifier.

Abstract: A terminal device and a communication system which are capable of starting LAA communication with a lower possibility of interference are provided. A communication unit performs communication using each of a first network and a second network. A communication control unit notifies a base station device constituting the first network of allocated frequency band exclusion information indicating a frequency band to be excluded from frequency bands allocated to the terminal device, and controls the communication unit so as to connect to the base station device using a frequency band allocated by the base station device.

Abstract: A communication system includes a first base station device and a second base station device, each of which forms one or more cells, a terminal device to be connected to the cells, and a centralized control device. The centralized control device includes: an interference control unit configured to, in a case that interference between a cell formed by the first base station device and a cell formed by the second base station device is detected, suppress the interference by causing at least any one of the first base station device and the second base station device to change the formation of the cells and form a cell to which the terminal device is connectable based on a connection state prior to suppressing the interference in an area in which the interference has occurred.

Abstract: A wireless communication system includes a first base station device, a second base station device, a mobile station device configured to communicate with the first base station device using a first component carrier and to communicate with the second base station device using a second component carrier. The first base station device includes a disconnection preparation requesting unit configured to transmit to the second base station device, a disconnection preparation request that requests the second base station device to prepare to disconnect the second component carrier.

Abstract: A mobile station device is provided with a communication unit for simultaneously executing a first communication with a first base station device executed over a first frequency band, and a second communication with a second base station that differs from the first base station apparatus over a second frequency band that differs from the first frequency band, and a control unit for adjusting individual ones of a first transmission power and second transmission power on the basis of both the first transmission power, which is used for the first communication, and the second transmission power, which is used for the second communication.

Abstract: A terminal includes: a transmission power setting unit configured to set transmission powers of two or a greater number of uplink component carriers connecting one or a greater number of base stations; a transmission power control unit configured to control the transmission powers based on information from the transmission power setting unit; and a transmission power summing unit configured to determine a sum of the transmission powers of the uplink component carriers.

Abstract: A wireless communication system includes a plurality of base station devices, and a mobile station device configured to communicate with the plurality of base station devices. The mobile station device includes: a necessity determining unit configured to refer to a communication state of a first base station device that is a base station device in communication with the mobile station device, and determine necessity of carrier aggregation; a cell search unit configured to, in a case that the necessity determining unit determines that carrier aggregation is necessary, search a communication available base station device from the plurality of base station devices; and a carrier aggregation requesting unit configured to, in a case that at least one communication available base station device is detected by the search, transmit a request for carrier aggregation to the first base station device, thus providing a wireless communication system that can obtain an excellent speed.

Abstract: A mobile station is provided to which multimedia broadcast/multicast service can be applied also during carrier aggregation. A mobile station communicates with a base station by carrier aggregation using a plurality of component carriers having different frequency bands. The mobile station receives contents in MBMS from the base station using at least two component carriers of a plurality of component carriers. The mobile station causes a display to display the received contents.

Abstract: A mobile station device is provided with a communication unit for simultaneously executing a first communication with a first base station device executed over a first frequency band, and a second communication with a second base station that differs from the first base station apparatus over a second frequency band that differs from the first frequency band, and a control unit for adjusting individual ones of a first transmission power and second transmission power on the basis of both the first transmission power, which is used for the first communication, and the second transmission power, which is used for the second communication.