Abstract: According to an aspect of the embodiments, a base station device in a wireless communication system including a terminal device and a base station device that is wirelessly connected to the terminal device and transmits signals to the terminal device, the base station device includes, an acquirer which acquires a first version of a signal format corresponding to the terminal device, and a transmitter that transmits, to the terminal device, difference information relating to a signal used for a different purpose from a purpose of a signal of a second version corresponding to the base station device when the first version differs from the second version.

Abstract: A terminal device has a processor and is used in a wireless communication system. The processor determines a value pertaining to a stop time of a transmission process. When the terminal device receives a first signal indicating a UL grant and then receives a second signal indicating an instruction to stop the uplink transmission, the processor counts an elapsed time since the reception of the second signal. The processor performs the uplink transmission based on the first signal when the terminal device receives a third signal indicating a restart of the uplink transmission before the elapsed time reaches the determined value. The processor performs the uplink transmission based on a grant indicated by a fourth signal when the terminal device receives the fourth signal after the elapsed time reaches the determined value, the fourth signal indicating a grant of the uplink transmission.

Abstract: According to an aspect of the embodiments, a base station device in a wireless communication system including a terminal device and a base station device that is wirelessly connected to the terminal device and transmits signals to the terminal device, the base station device includes, an acquirer which acquires a first version of a signal format corresponding to the terminal device, and a transmitter that transmits, to the terminal device, difference information relating to a signal used for a different purpose from a purpose of a signal of a second version corresponding to the base station device when the first version differs from the second version.

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: An information processing device, includes: a memory configured to store data of one or more indices of radio quality at a plurality of points; and a processor coupled to the memory and configured to: identify one or more points among the plurality of points other than a current location of a mobile terminal that requests communication, and determine whether to permit the communication based on statistical information obtained from the one or more indices of the radio quality at the one or more points.

Abstract: A receiving device includes a controller and a receiver. The controller allocates a radio resource to receive data from each of a plurality of transmitting devices based on a total number of combinations of orthogonal sequences radio resources. Each of the orthogonal sequences is used to encode retransmission information indicating whether or not to request retransmission of data. Each of the radio resources is allocated to transmit the retransmission information. The receiver receives the data by using the allocated radio resources.

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: This disclosure relates to a base station where the base station includes a selector that based on wireless communication states with each mobile station, selects a mobile station for which amplification is to be performed at a relay station; and a reporter that reports information related to the mobile station selected by the selector, wherein the reporter has a function of transmitting report information to the relay station and reports as the report information, the information related to the mobile station and information concerning a gain factor that is selected based on the number of mobile stations for which amplification is to be performed.

Abstract: An information processing device, includes: a memory configured to store data of one or more indices of radio quality at a plurality of points; and a processor coupled to the memory and configured to: identify one or more points among the plurality of points other than a current location of a mobile terminal that requests communication, and determine whether to permit the communication based on statistical information obtained from the one or more indices of the radio quality at the one or more points.

Abstract: There are provided a communication device, service-area adjusting method, and mobile communication system capable of accurately executing an optimization algorithm on an actual field. An EMS (a communication device) acquires an index value indicating downstream reception quality of a mobile station in a communication area from the mobile station via a base station in the communication area with respect to each mobile station. Then, the EMS determines whether to start or end the execution of arithmetic processing of a transmission parameter of each base station in the communication area by comparing a value based on at least any of average communication quality between the base station and mobile station in the communication area, throughput, and received power, which is obtained based on an index value of each mobile station, with a reference value.

Abstract: A base station of a mobile device's movement destination receives a diversity handover (DHO) start notification from a mobile station at the beginning of a DHO. This notifies a radio network control apparatus and an instruction is issued to the base station to add a radio link. The time for transmitting data to a mobile device is determined, the transmission timing is rounded up, and the data is transmitted from the base station to a mobile device. In this event, a search window's timing for receiving data from the mobile device is shifted with the round up of the transmission timing; and therefore the width of the search window is enlarged. The movement destination's base station also receives a DHO complete notification from a mobile device at the completion of the DHO. The movement destination's base station changes the width of the width-enlarged window back to the original width.

Abstract: A wireless communication system includes a calculator that calculates the number of mobile stations for which amplification is to be performed or the rate of mobile stations for which amplification is to be performed among all mobile stations; an allocator that based on a calculation result obtained by the calculator, allocates from among a plurality of bands, one or more bands for performing amplification; and an amplifier that performs amplification with respect to the one or more bands allocated by the allocator. The calculator is included at a base station and the allocator and the amplifier are included at a relay station, or the calculator and the allocator are included at the base station and the amplifier is included at the relay station.

Abstract: A base station includes a selector that based on wireless communication states with each mobile station, selects a mobile station for which amplification is to be performed at a relay station; and a reporter that reports information related to the mobile station selected by the selector.

Abstract: A receiving apparatus includes a synchronization timing detector that detects one of a first sampling timing and a second sampling timing as a synchronization timing of a received digital signal. The first sampling timing being a timing at which a maximum correlation power value is detected and the second sampling timing being a timing adjacent to the first sampling timing. The detecting is based on a correlation power value detected at the first sampling timing, a correlation power value detected at the second sampling timing, a correlation power value detected at a third sampling timing that precedes an earlier one of the first and the second sampling timing by n sampling intervals, and a correlation power value detected at a fourth sampling timing that follows a later one of the first and the second sampling timing by n sampling intervals, where n is a natural number.

Abstract: An orthogonal frequency division communication system which enables flexible modification of the ratio of allocation between uplink and downlink transmissions, while maintaining advantages similar to those of TDD (Time Division Duplex) systems, has a base station and a plurality of mobile stations connected by uplinks and downlinks, and a plurality of mutually orthogonal frequencies are allocated, on the frequency axis and on the time axis, to the uplinks and downlinks and to the plurality of mobile stations.

Abstract: A base station of a mobile device's movement destination receives a diversity handover (DHO) start notification from a mobile station at the beginning of a DHO. This notifies a radio network control apparatus and an instruction is issued to the base station to add a radio link. The time for transmitting data to a mobile device is determined, the transmission timing is rounded up, and the data is transmitted from the base station to a mobile device. In this event, a search window's timing for receiving data from the mobile device is shifted with the round up of the transmission timing; and therefore the width of the search window is enlarged. The movement destination's base station also receives a DHO complete notification from a mobile device at the completion of the DHO. The movement destination's base station changes the width of the width-enlarged window back to the original width.

Abstract: In a wireless base station device that communicates with a mobile device via an advance base station, the reception timing determination portion determines the reception timing of data that is transmitted by a mobile device that exists in a cell of the advance base station on the basis of the distance between the wireless base station device and the advance base station and the cell radius of the advance base station. The data reception portion receives data from the mobile device by performing a reception operation at the reception timing, the delay profile creation portion creates delay profiles on the basis of the received data, and the path detection portion detects paths from the mobile device on the basis of the delay profiles.

Abstract: In a wireless base station device that communicates with a mobile device via an advance base station, the reception timing determination portion determines the reception timing of data that is transmitted by a mobile device that exists in a cell of the advance base station on the basis of the distance between the wireless base station device and the advance base station and the cell radius of the advance base station. The data reception portion receives data from the mobile device by performing a reception operation at the reception timing, the delay profile creation portion creates delay profiles on the basis of the received data, and the path detection portion detects paths from the mobile device on the basis of the delay profiles.