Abstract: A deriver derives a difference defined as a distance between a position of a charging coil and a position of an electronic appliance. An extractor extracts a detection tolerance from a table stored in a table storage, based on information related to a model of the electronic appliance. A transmitter transmits the difference and the detection tolerance to the electronic appliance. The electronic appliance determines a first power when a magnitude of a combination of the difference and the detection tolerance is equal to or smaller than a threshold value and determines a second power when the magnitude of the combination of the difference and the detection tolerance is larger than the threshold value. The first power is larger than the second power. A power controller adjusts a magnitude of power to be transported from the charging coil according to an instruction from the electronic appliance.

Abstract: A communication control device configured to control a wireless connection between a plurality of terminal devices and a plurality of access points, the communication control device includes a memory, and a processor coupled to the memory and configured to acquire a terminal communication bandwidth which indicates a communication bandwidth to be used by the terminal devices for communication, and a provided communication bandwidth which indicates a communication bandwidth provided by the respective plurality of access points to the respective plurality of terminal devices, select the access point to be wirelessly connected with each of the plurality of terminal devices based on the terminal communication bandwidth and the provided communication bandwidth, and control so that the respective plurality of terminal devices are wirelessly connected with the selected access point.

Abstract: An other-channel received-power measurement unit of an access point measures a channel occupancy rate due to communication between the access point itself and a terminal connected to the access point itself in a communication channel. A communication-channel received-power measurement unit measures received powers from another access point using the communication channel and a terminal connected to the other access point. The other-channel received-power measurement unit measures received powers from another access point using a channel other than the communication channel and a terminal connected to the other access point. An interference-power calculation unit and an interference-occupancy-rate calculation unit of a control station device obtains an interference power and an interference occupancy rate between each pair among the access points, based on the channel occupancy rate, the first received power, and the second received power in each access point.

Abstract: A radio communication device including a memory that stores information on a strength of interference between a beam output by a first base station and a beam output by a second base station for each of a plurality of combinations, each of the plurality of combinations including at least one of a plurality of beams output by the first base station and at least one of a plurality of beams output by the second base station, emitting directions of each of the plurality of beams output by the first base station being different each other, emitting directions of each of the plurality of beams output by the second base station being different each other, and a processor configured to identify one or more combinations having the interference strength higher than a threshold, and assign different radio resources to each of beams included in the identified one or more combinations.

Abstract: A communication control apparatus includes: a throughput estimation unit configured to estimate a first throughput in case that a first mobile apparatus performs radio communication with a base station apparatus based on first information notified from the first mobile communication apparatus; a radio method selection unit configured to allocate to the first mobile station apparatus a first radio communication method performing radio communication with the base station apparatus by using a carrier sense method, when a first request throughput notified from the first mobile station apparatus and requested by the first mobile station apparatus is smaller than the estimated first throughput; and a notification processing unit configured to notify information relating to the allocated first radio communication method to the first mobile station apparatus.

Abstract: A communication control device, includes a terminal information acquisition unit which acquires terminal-related information including communication service information relating to a communication service executed, and network information relating to a network, a selection unit which selects, among a plurality of combinations of networks each of which can be used by each of a plurality of communication services, a combination of networks having a smallest total communication cost to be charged for each of the plurality of communication services in each of the plurality combinations of networks, on the basis of the terminal-related information, and network-related information including communication cost information, and communication bandwidth information, and a network control unit which executes a network control such that the networks used respectively by each of the plurality of communication services are the selected combination of networks.

Abstract: A wireless communication system includes a first access point that forms a first wireless area and a second access point that forms a second wireless area. The first access point controls the scheduling of a terminal located in the first wireless area based on the state of a communication channel between a terminal which is a candidate for scheduling by the second access point and the first access point.

Abstract: A base station serves as a second base station in a communication system including a first base station corresponding to a first cell and the second base station corresponding to a second cell smaller than a first area of the first cell. At least part of the second cell overlaps the first area. The base station includes: a calculation unit that, based on a first channel estimation value between a first terminal connected to the first base station through the first cell and the second base station as well as a second channel estimation value between a second terminal connected to the second base station through the second cell and the second base station, calculates an indicator based on a phase relationship between the first channel estimation value and the second channel estimation value; and a scheduler that determines whether to include a first candidate in a second candidate.

Abstract: A transmission power management device including: a memory, and a processor coupled to the memory and configured to: acquire a first path loss between a first relay station and a second relay station, the first relay station relaying a first signal, the second relay station relaying a second signal, and adjust a first transmission power of the first signal by the first relay station based on the first path loss.

Abstract: Connection destinations of a plurality of wireless terminals are selected from a plurality of connection destination candidates to maximize an evaluation value based on each of data rates in cases where each of the wireless terminals is connected to each of the connection destination candidates and each of resource allocation rates for each of the wireless terminals at each of the connection destination candidates.

Abstract: A communication controller includes a memory, and processor circuitly coupled to the memory and configured to calculate an expected value of an interference amount in a first wireless communication apparatus and a second wireless communication apparatus on the basis of a first use probability in a first frequency bandwidth, a second use probability in a second frequency bandwidth, the first and second frequency bandwidth being calculated on the basis of the traffic of a terminal apparatus, and received power of a signal received by the first wireless communication apparatus from the second wireless communication apparatus, assign a first or second channel to the first and second wireless communication apparatuses on the basis of the expected value, and notify the first or second channel which has been assigned to the first and second wireless communication apparatuses.

Abstract: A base station that performs beamforming on a user equipment includes an acquiring unit that acquires a distribution of propagation losses in a communication area, a deciding unit that decides a beam set formed by a plurality of beams that are used for channel estimation, each of the beams having a beam width based on the distribution, and an antenna that transmits a reference signal to the user equipment by using each of the beams that form the beam set.

Abstract: A radio communication device including a memory that stores information on a strength of interference between a beam output by a first base station and a beam output by a second base station for each of a plurality of combinations, each of the plurality of combinations including at least one of a plurality of beams output by the first base station and at least one of a plurality of beams output by the second base station, emitting directions of each of the plurality of beams output by the first base station being different each other, emitting directions of each of the plurality of beams output by the second base station being different each other, and a processor configured to identify one or more combinations having the interference strength higher than a threshold, and assign different radio resources to each of beams included in the identified one or more combinations.

Abstract: A base station serving terminals, the base station including: a memory, and a processor coupled to the memory and configured to: select a terminal among the served terminals based on reception powers or reception qualities at the served terminals, when a number of the served terminals exceeds a threshold, determine an amount of change in transmission parameter so that a reception quality at the selected terminal from another base station satisfies a certain condition in case where a handover of the selected terminal to the other base station is performed, the other base station being selected based on the reception powers or the reception qualities, perform the handover of the selected terminal to the other base station, and change the transmission parameter by the determined amount of change.

Abstract: A HeNB includes a CQI acquiring unit and an SIR acquiring unit that measure communication qualities of transmission bands on an uplink side and a downlink side. The HeNB, upon detecting an interference difference between bands in a transmission band on each of the uplink side and the downlink side on the basis of a result of measurement of the communication qualities, sets allocation of a band in which the communication quality satisfies a predetermined condition in the transmission band in which the interference difference is detected. The HeNB includes a control unit that, upon detecting signal interference on the downlink side on the basis of the result of the measurement of the communication qualities, controls a band on the downlink side, and controls a band on the uplink side in the transmission band in cooperation with the control on the band on the downlink side.

Abstract: A communication control apparatus including a processor is provided. The processor is configured to calculate a first predicted communication quality of a mobile station apparatus in a state not including an interference signal from one or more cells among surrounding cells in accordance with measurement results of a quality of reception of a signal from a serving cell and strength of interference signals from the surrounding cells as measured by the mobile station apparatus, and judge permission for transmission of signals by the one or more cells in a radio resource of communication of the mobile station apparatus based on the first predicted communication quality.

Abstract: A wireless communication method for transmitting data signals of first and second users using first and second subcarrier groups, respectively, and transmitting pilot signals of the first and second users by multiplexing the pilot signals to the data signals, including allocating the pilot signals of the first and second users to different frequencies, where each of the pilot signals is generated based on Zadoff-Chu sequence; and mapping subcarrier components of the pilot signals so that one or more subcarrier components of higher frequencies and one or more subcarrier components of lower frequencies in the transmission band become identical, in regard to the pilot signals of each of the first and second users.

Abstract: A communication control device, includes a terminal information acquisition unit which acquires terminal-related information including communication service information relating to a communication service executed, and network information relating to a network, a selection unit which selects, among a plurality of combinations of networks each of which can be used by each of a plurality of communication services, a combination of networks having a smallest total communication cost to be charged for each of the plurality of communication services in each of the plurality combinations of networks, on the basis of the terminal-related information, and network-related information including communication cost information, and communication bandwidth information, and a network control unit which executes a network control such that the networks used respectively by each of the plurality of communication services are the selected combination of networks.

Abstract: A base station apparatus is disclosed. The base station apparatus includes a classification unit configured to classify mobile station apparatuses connected to a first cell into a CoMP target mobile station apparatus and a CoMP non-target mobile station apparatus, a first allocation unit configured to allocate a wireless resource to the CoMP target mobile station apparatus connected to the first cell, and a second allocation unit configured to determine the wireless resource to be allocated to the CoMP non-target mobile station apparatus connected to the first cell so as to reduce interference with a wireless resource allocated to a CoMP target mobile station apparatus connected to a second cell different from the first cell.

Abstract: A base station including: a transmitter configured to transmit a first radio signal to a first mobile station, a receiver configured to receive a second radio signal, a processor configured to detect a second mobile station communicates with a communication device differing from the base station, based on a third radio signal from the second mobile station which is contained in the second radio signal, the first radio signal interfering with a radio communication between the second mobile station and the communication device, and to decrease transmission power of the first radio signal, on detecting the second mobile station or failing to detect the second mobile station over a first given period or longer.