Abstract: An information processing apparatus and method capable of minimizing influences affecting business activities and dynamically changing the configuration of a storage apparatus in response to scale-out of hosts are proposed.

Abstract: An announce apparatus comprises an analysis part that obtains a capture image capturing at least any one of an area including a boarding position at a station or inside of a vehicle so as to determine, based on the capture image, whether a person who needs support (termed hereinafter as “support-needing user”) will board on/off the vehicle; and an announce part that announces boarding on/off support information relating to the support-needing user when the analysis part determines that the support-needing user will board on/off the vehicle.

Abstract: An announce apparatus comprises an analysis part that obtains a capture image capturing at least any one of an area including a boarding position at a station or inside of a vehicle so as to determine, based on the capture image, whether a person who needs support (termed hereinafter as “support-needing user”) will board on/off the vehicle; and an announce part that announces boarding on/off support information relating to the support-needing user when the analysis part determines that the support-needing user will board on/off the vehicle.

Abstract: An announce apparatus comprises an analysis part that obtains a capture image capturing at least any one of an area including a boarding position at a station or inside of a vehicle so as to determine, based on the capture image, whether a person who needs support (termed hereinafter as “support-needing user”) will board on/off the vehicle; and an announce part that announces boarding on/off support information relating to the support-needing user when the analysis part determines that the support-needing user will board on/off the vehicle.

Abstract: The present invention provides a calibrating method of an array antenna transceiver for performing multicarrier transmission capable of minimizing the increase of a transceiver size and a signal processing load and keeping a certain calibration accuracy. A method of calibrating a transmission route using an array antenna transceiver for performing broadband transmission by a multicarrier includes grouping all subcarriers into a plurality of subcarrier groups and calibrating a transmission route for each group.

Abstract: A base station of the present invention performs transmission power control quickly with maintaining communication quality in mobile communications systems, by setting up priority about transmission power control and performing transmission power control sequentially from a channel with a high priority. A channel priority setting unit outputs priority information indicating priority for transmission power control about a plurality of channel information. A power calculation unit outputs total power information of all channels about the plurality of channel information. A power adjustment unit performs power adjustment to the channel information selected on the basis of the priority information when the total power information has larger value than maximum transmission power information.

Abstract: An error detector includes: an automatic gain control amplifier for amplifying or attenuating an input signal with a variable gain and outputting an output signal; and a control unit for controlling the variable gain so as to keep a signal level of the output signal constant, obtaining an overall gain according to the variable gain and the signal level of the input signal, and detecting an error according to a result of a comparison of the overall gain with a first threshold value.

Abstract: A transmitting apparatus includes a plurality of antenna elements, user signal output unit, calibration signal generation unit, antenna signal processing unit, and total transmission power measuring unit. The user signal output unit weights a user signal by an antenna weight and outputs it to each antenna element. The calibration signal generation unit outputs a calibration signal to be used to detect the characteristic of a transmission path. The antenna signal processing unit provided in the transmission path executes spread modulation and multiplexing for the user signal and calibration signal and outputs a multiplexed signal. The total transmission power measuring unit measures the value of total transmission power of the multiplexed signal to be transmitted from each antenna element on the basis of the multiplexed signal input from the antenna signal processing unit. An antenna weight correction unit executes a correction operation on the basis of the total transmission power value.

Abstract: The invention discloses transmit power control that easily controls transmit power for transmitting a signal to a mobile terminal so that the transmit power has an optimal value. When there is a succession of transmit power control information transmitted from a mobile terminal to the radio base station, that includes an instruction to raise transmit power, during a period from when a calculated total transmit power, based on power information of a multiple signal that is obtained by multiplexing signals transmitted by each mobile terminal, exceeds a preliminarily set power threshold to when the total transmit power falls below the preliminarily set power threshold, the transmit power control information is converted to transmit power control information that includes an instruction to maintain transmit power at a constant level. The transmit power is controlled based on the converted transmit power control information. The signal is transmitted to the mobile terminal by use of the controlled transmit power.

Abstract: Calibration signals are distributed to the respective output signals of a plurality of antenna elements, thereby multiplexing the distributed calibration signals with the respective signals of the plurality of antenna elements. The calibration signals are extracted from the respective output signals of the multiplexing means and modulated, and the SIR (Signal to Interference Ratio) values of the calibration signals are calculated. The SIR value as calculated by SIR calculating means each calibration period is compared with a SIR threshold value. Only when the SIR value exceeds the SIR threshold value, a demodulated result of the calibration signal is outputted. Further, in each reception branch, the calibration amount of amplitude/phase information is determined based on a reference demodulation result of the branch corresponding to the demodulation result of the branch corresponding to the demodulation result, and a user signal is corrected based on the calibration amount.

Abstract: A base station of the present invention performs transmission power control quickly with maintaining communication quality in mobile communications systems, by setting up priority about transmission power control and performing transmission power control sequentially from a channel with a high priority. A channel priority setting unit outputs priority information indicating priority for transmission power control about a plurality of channel information. A power calculation unit outputs total power information of all channels about the plurality of channel information. A power adjustment unit performs power adjustment to the channel information selected on the basis of the priority information when the total power information has larger value than maximum transmission power information.

Abstract: Calibration signals are distributed to the respective output signals of a plurality of antenna elements, thereby multiplexing the distributed calibration signals with the respective signals of the plurality of antenna elements. The calibration signals are extracted from the respective output signals of the multiplexing means and modulated, and the SIR (Signal to Interference Ratio) values of the calibration signals are calculated. The SIR value as calculated by SIR calculating means each calibration period is compared with a SIR threshold value. Only when the SIR value exceeds the SIR threshold value, a demodulated result of the calibration signal is outputted. Further, in each reception branch, the calibration amount of amplitude/phase information is determined based on a reference demodulation result of the branch corresponding to the demodulation result of the branch corresponding to the demodulation result, and a user signal is corrected based on the calibration amount.

Abstract: A transmitting apparatus includes a plurality of antenna elements, user signal output unit, calibration signal generation unit, antenna signal processing unit, and total transmission power measuring unit. The user signal output unit weights a user signal by an antenna weight and outputs it to each antenna element. The calibration signal generation unit outputs a calibration signal to be used to detect the characteristic of a transmission path. The antenna signal processing unit provided in the transmission path executes spread modulation and multiplexing for the user signal and calibration signal and outputs a multiplexed signal. The total transmission power measuring unit measures the value of total transmission power of the multiplexed signal to be transmitted from each antenna element on the basis of the multiplexed signal input from the antenna signal processing unit. An antenna weight correction unit executes a correction operation on the basis of the value of the total transmission power.

Abstract: A calibration system of an array antenna receiving apparatus is used for cellular mobile communication systems. In the array antenna receiving apparatus of the present calibration system, a calibration time determining unit (111) determines an adaptive calibration time based on detection voltages of the total reception power inputted to antenna radio receiving units (104-1 to 104-N). Next, a calibration signal processing unit (112) detects phase/amplitude information of a calibration signal from multiplexing signals outputted from the antenna radio receiving units based on the longest calibration time among the calibration times. User signal processing units (108-1 to 108-M) correct outputs from the antenna radio receiving units based on the phase/amplitude information. Therefore, the deterioration of the reception sensitivity of a user signal to a mobile machine can be prevented and the reduction of the number of users in the cellular system can further be prevented.

Abstract: The present invention provides a calibrating method of an array antenna transceiver for performing multicarrier transmission capable of minimizing the increase of a transceiver size and a signal processing load and keeping a certain calibration accuracy.

Abstract: A calibration method, which allows calibration with high precision and which can perform calibration normally even when a specific radio receiving portion has a problem, and an array antenna receiving apparatus using the method. The array antenna receiving apparatus multiplexes calibration signals having predetermined symbol patterns from a multiplexing circuit (103) to signals received by array antennas (101) and inputs the results to radio receiving portions (104). The calibration signals having passed through the radio receiving portions are extracted by a calibration signal extracting portion (110), and an SIR detecting portion (111) determines one of the radio receiving portions having the best receiving quality as a reference branch based on the calibration signals.

Abstract: A calibration system of an array antenna receiving apparatus is us d for cellular mobile c mmunication systems. In the array antenna receiving apparatus of the present calibration system, a calibration time determining unit (111) determines an adaptive calibration time based on detection voltages of the total reception power inputted to antenna radio receiving units (104-1 to 104-N). Next, a calibration signal processing unit (112) detects phaselamplitude information of a calibration signal from multiplexing signals outputted from the antenna radio receiving units based on the longest calibration time among the calibration times. User signal processing units (108-1 to 108-M) correct outputs from the antenna radio receiving units based on the phase/amplitude information. Therefore, the deterioration of the reception sensitivity of a user signal to a mobile machine can be prevented and the reduction of the number of users in the cellular system can further be prevented.

Abstract: A cell-site base station apparatus comprises an array of diversity antennas for receiving multipath components of a mobile-transmitted signal. Receivers, connected to the antennas, produce strength indication signals and demodulated signals. For transmission of a control signal from the cell-site to a mobile station, a variable gain transmitter is coupled to one of the antennas and the control signal is sent at a first power level. When a connection is established for the mobile station, the strength indication signals from the receivers are examined to detect a highest strength value and one of the antennas is selected at which the multipath component of the highest strength value is arriving. The transmitter is then switched to the selected antenna for transmitting traffic signals and the gain of the transmitter is set to a second power level lower than the first power level to compensate for the transmit diversity gain of the selected antenna.

Abstract: In a radio-frequency receiver, a received RF signal is converted to an intermediate frequency (IF) signal and band-limited by a first IF filter to a channel bandwidth. The level of the output of the IF filter is detected by a detector and compared with a threshold to produce a first and a second output when the detected level is lower or higher than the threshold, respectively. A switching circuit applies the output of the IF filter to a demodulator via an IF amplifier in response to the first output and directly applies it to the demodulator in response to the second output. To prevent interference from adjacent channels, a second intermediate frequency filter is connected between the band-limiting IF filter and the detector. The second IF filter has a passband corresponding to a center frequency portion of the passband of the band-limiting IF filter.