Abstract: A wireless communication system includes a base station apparatus and a terminal device. The base station apparatus includes a processor that executes a process including mapping first control information concerning a first frequency band which needs a license to use for wireless communication, mapping second control information concerning a second frequency band which does not need the license to use for the wireless communication, and generating a control channel signal by arranging the first control information and the second control information in areas different from each other; and a transmitter that transmits the control channel signal generated by the processor to the terminal device.

Abstract: In a first case, a base station transmits to a first terminal, first assignment information that indicates radio resources in a first range assigned to terminal-to-terminal communication; the first terminal uses the radio resources indicated by the first assignment information and transmits a signal to a second terminal; and the second terminal receives the signal from the first terminal based on broadcast information transmitted by the base station. In a second case, the base station transmits to the first terminal, second assignment information that indicates radio resources in the first range and a second range assigned to the terminal-to-terminal communication. The first terminal uses the radio resources in the first range indicated by the second assignment information and transmits to the second terminal, control information that indicates the radio resources in the second range and transmits/receives signals to/from the second terminal by using the radio resources in the second range.

Abstract: A wireless system includes a plurality of terminals and a wireless base station. Each of the plurality of terminals determines a priority of a local terminal related to transmission of a certain signal according to a certain rule when the certain signal is not received from the wireless base station.

Abstract: A communication system includes: a base station configured to perform radio communication with a mobile station; and a control device configured to control a rate of transferring data to the base station based on a radio quality between the mobile station and the base station. A control device includes: a memory; and a processor coupled to the memory and configured to: obtain a radio quality between a mobile station and a base station that performs radio communication with the mobile station; and control a rate of transferring data to the base station based on the radio quality.

Abstract: A method for transmission of information about downlink and uplink parameters of a intermediate apparatus link in a multi-hop wireless communication system, the system comprising a first node apparatus, a second node apparatus and one or more intermediate apparatuses, each said apparatus being operable to transmit and receive information along a series of links forming a communication path for downlink and uplink communication, the communication path extending between the first node and second node apparatuses via the or each intermediate apparatus, each link comprising either a first node link between the first node apparatus and a said intermediate apparatus or an intermediate apparatus link between a said intermediate apparatus and a said apparatus which is not the first node apparatus, and the system having access to a minimum allocation unit for allocating time and transmission frequency bandwidth, the method comprising: obtaining values of downlink and uplink parameters for a particular intermediate app

Abstract: A communication control device includes a traffic monitoring unit, the number of ranks calculation unit, a rank value calculation unit, a communication control unit, and a download unit. The traffic monitoring unit monitors a traffic amount between a content server and a base station. The number of ranks calculation unit calculates the number of rank values that servers as a reference for determining a download destination mobile station of data based on a monitoring result by the traffic monitoring unit. The rank value calculation unit calculates the rank value for each mobile station using the number and radio communication quality of a plurality of mobile stations. The communication control unit determines the download destination mobile station in order from a mobile station having a high rank value at a determination timing. The download unit downloads the data to the mobile station determined as the download destination.

Abstract: A communication control apparatus includes a communication quality determining unit, a rank value calculating unit, and a download control unit. The communication quality determining unit acquires wireless communication qualities of a plurality of mobile stations. The rank value calculating unit calculates a reference value to determine mobile stations to be data download destinations by using the wireless communication qualities acquired by the acquiring unit, compares the reference values of the respective mobile stations at a first time point, and determines mobile stations to be the data download destinations in order from a mobile station whose reference value is the highest based on results of the comparison. The download control unit downloads data to the mobile stations determined as the data download destinations by the rank value calculating unit.

Abstract: In a radio communication system in which a radio communication apparatus performs communication with another apparatus via a radio relay apparatus, a communication quality value indicating communication quality between the radio communication apparatus and the radio relay apparatus is measured, a threshold for deciding a level of the communication quality is determined on the basis of a past tendency of the communication quality value, and transmission of contents between the radio communication apparatus and the other apparatus is blocked while a present value of the communication quality is smaller than the threshold.

Abstract: A communication terminal device includes a determining unit that determines a region size of a control channel in accordance with a PHICH duration value transmitted from a base station device, and an acquiring unit that acquires, on the basis of the region size, data to be sent to the communication terminal device. A base station device includes a first control unit that updates a CFI value at a first interval, a second control unit that updates a PHICH duration value at a second interval, the second interval being greater than the first interval, and a scheduling unit that performs scheduling of, only in a subframe in which the PHICH duration value matches the CFI value, data to be sent to a communication terminal device that is outside an arrival coverage of a signal including the CFI value.

Abstract: An amplifying apparatus includes an amplifying unit that includes multiple amplifiers coupled in parallel; a measuring unit that measures in a predetermined period, frequency distribution of any one among instantaneous power and instantaneous voltage of a signal amplified by the amplifying unit; a calculating unit that calculates for multiple candidate values of a predetermined parameter of the amplifying unit, efficiency of amplification that is performed by the amplifying unit and based on the frequency distribution; and a controller that controls the predetermined parameter, based on the efficiency calculated for the candidate values by the calculating unit.

Abstract: In a radio communication system in which a radio communication apparatus performs communication with another apparatus via a radio relay apparatus, a communication quality value indicating communication quality between the radio communication apparatus and the radio relay apparatus is measured, a threshold for deciding a level of the communication quality is determined on the basis of a past tendency of the communication quality value, and transmission of contents between the radio communication apparatus and the other apparatus is blocked while a present value of the communication quality is smaller than the threshold.

Abstract: A communication control device includes a traffic monitoring unit, the number of ranks calculation unit, a rank value calculation unit, a communication control unit, and a download unit. The traffic monitoring unit monitors a traffic amount between a content server and a base station. The number of ranks calculation unit calculates the number of rank values that servers as a reference for determining a download destination mobile station of data based on a monitoring result by the traffic monitoring unit. The rank value calculation unit calculates the rank value for each mobile station using the number and radio communication quality of a plurality of mobile stations. The communication control unit determines the download destination mobile station in order from a mobile station having a high rank value at a determination timing. The download unit downloads the data to the mobile station determined as the download destination.

Abstract: A communication control apparatus includes a communication quality determining unit, a rank value calculating unit, and a download control unit. The communication quality determining unit acquires wireless communication qualities of a plurality of mobile stations. The rank value calculating unit calculates a reference value to determine mobile stations to be data download destinations by using the wireless communication qualities acquired by the acquiring unit, compares the reference values of the respective mobile stations at a first time point, and determines mobile stations to be the data download destinations in order from a mobile station whose reference value is the highest based on results of the comparison. The download control unit downloads data to the mobile stations determined as the data download destinations by the rank value calculating unit.

Abstract: A communication system includes: a base station configured to perform radio communication with a mobile station; and a control device configured to control a rate of transferring data to the base station based on a radio quality between the mobile station and the base station. A control device includes: a memory; and a processor coupled to the memory and configured to: obtain a radio quality between a mobile station and a base station that performs radio communication with the mobile station; and control a rate of transferring data to the base station based on the radio quality.

Abstract: A method of controlling a relay station in a cell of a multi-hop relay network in accordance with a one-way propagation delay between a base station in the cell and the relay station. A relay station in a cell of a multi-hop relay network including means for controlling the signal flow between the relay station and the various other stations in the cell in accordance with a one-way propagation delay between a base station in the cell and the relay station.

Abstract: An amplification device includes: an amplitude adjustment circuit configured to adjust an amplitude level of an input signal so as to keep the amplitude level within a given range; an amplifier configured to amplify the adjusted signal; and a circuitry configured to change an amplitude level of the amplified signal, based on the amplitude level of the input signal and a first distortion compensation corresponding to the amplitude level of the input signal.

Abstract: A Doherty amplifier comprises a first amplifier, one or more second amplifiers and a third amplifier to receive inputs of high-frequency signals in parallel, wherein the first amplifier serving as a carrier amplifier amplifies the high-frequency signal, each of the second amplifiers serving as the carrier amplifiers or peaking amplifiers amplifies the high-frequency signal, and the third amplifier serving as the peaking amplifier amplifies the high-frequency signal.

Abstract: A user equipment, for use in a wireless communication system, includes a unit operable to measure a received signal quality in a receiver, a unit operable to report the measuring received signal quality to the transmitter, or a unit operable to report a selected modulation and coding scheme to the transmitter.

Abstract: A power amplification device, includes: an amplifier to amplify an input signal; a switched capacitor, provided at an output stage of the amplifier, to change capacitance based on a first control signal; a matching unit, provided at the output stage of the amplifier and including a varactor pair in which two varactor diodes are coupled in series or a varactor pair in which two varactor diodes are coupled in parallel, to change capacitance based on a second control signal; a detection circuit to detect power of the input signal; a quantization circuit to quantize a detected power value, form a quantized bit string having a high-order bit group and a low-order bit group, and output the high-order bit group as the first control signal to the switched capacitor; and a conversion circuit to convert the low-order bit group into an analog value and form the second control signal.

Abstract: A method of reporting received signal quality to a transmitter includes measuring a received signal quality in a receiver, and selectively performing the steps of reporting the received signal quality to the transmitter, and reporting a selected modulation and coding scheme to the transmitter.