Abstract: A driving assistance device includes a memory and a processor. The processor acquires travel information including acceleration of a moving body. The processor presents, to the moving body, information regarding cargo collapse on the moving body that is specified on the basis of a distribution of the acceleration of the moving body in multiple axes on the basis of the travel information.

Abstract: The present invention searches for compounds etc. that may inhibit the interaction between the spike (S) protein of SARS-CoV-2 and the ACE2 protein. The present invention provides a composition for inhibiting the binding between the spike (S) protein of SARS-CoV-2 and the angiotensin converting enzyme 2 (ACE2) protein comprising an effective amount of chlorine dioxide.

Abstract: A radio terminal comprises a communication unit, a measurement unit, a measurement unit, and a control unit. The communication unit selects the CDMA or OFDM scheme as a communication scheme to be used in a cell formed by a radio base station and performs radio communication. The measurement unit measures the receiving quality relating to the time difference between the preceding and delayed wave of a received signal in the OFDM scheme and measures the receiving quality of a received signal in the CDMA scheme. When the OFDM scheme is used in an idle state, when the receiving quality relating to the time difference which is obtained by the measurement unit is deteriorated below a threshold value corresponding to a guard interval used in the OFDM scheme, the control unit causes the measurement unit to measure the receiving quality of the received signal in the CDMA scheme.

Abstract: A radio communication system comprises: a radio base station, a terminal device, and a plurality of relay devices that relay radio communication between the radio base station and the terminal device. The plurality of relay devices create communication quality information in radio communication between the relay devices and the radio base station. The terminal device preferentially connects to the relay device having the best communication quality based on each of the communication quality information.

Abstract: A radio base station 1 used in a radio communication system in which an SC-FDMA scheme is adopted for an uplink and an OFDMA scheme is adopted for a downlink, comprises: a receiver 140 configured to perform reception processing on a radio signal in the SC-FDMA scheme or the OFDMA scheme; an OFDM demodulator 150 configured to convert a received signal obtained by the receiver 140 from a time domain to a frequency domain and perform a primary demodulation of the resultant signal; a frame processor 170 configured to convert a data symbol obtained by the OFDM demodulator from a frequency domain to a time domain and perform a secondary demodulation of the resultant symbol; and a measurement unit 210 configured to measure a signal which is a signal after conversion to the frequency domain by the OFDM demodulator 150 and is the signal before conversion to the time domain by the frame processor 170.

Abstract: A radio base station 1 used in an FDD radio communication system in which an uplink frequency band is different from a downlink frequency band, comprises: an antenna 110; a duplexer 130 configured to extract a signal component of the uplink frequency band from a radio signal received by the antenna; a frequency converter 120 provided on a signal path between the antenna 110 and the duplexer 130 and is configured to convert a signal component of the downlink frequency band contained in the radio signal received by the antenna 110 to a signal component of the uplink frequency band; and a measurement unit 210 configured to perform a measurement on the signal component of the uplink frequency band extracted by the duplexer.

Abstract: A pointing device includes a displacement detection section that detects an amount of displacement and a direction of displacement of the self-pointing device; a wireless communication section that transmits information of the amount of displacement and the direction of displacement which are detected by the displacement detection section as a radio signal; one or a plurality of contact detection sections that detect the presence or the absence of a contact; and a power source control section that, while at least one of the contact detection sections detects any contact, supplies electric power to the wireless communication section and the displacement detection section, and that, while none of the contact detection sections detects any contact, does not supply electric power to the wireless communication section and the displacement detection section.

Abstract: A radio terminal comprises a communication unit, a measurement unit, a measurement unit, and a control unit. The communication unit selects the CDMA or OFDM scheme as a communication scheme to be used in a cell formed by a radio base station and performs radio communication. The measurement unit measures the receiving quality relating to the time difference between the preceding and delayed wave of a received signal in the OFDM scheme and measures the receiving quality of a received signal in the CDMA scheme. When the OFDM scheme is used in an idle state, when the receiving quality relating to the time difference which is obtained by the measurement unit is deteriorated below a threshold value corresponding to a guard interval used in the OFDM scheme, the control unit causes the measurement unit to measure the receiving quality of the received signal in the CDMA scheme.

Abstract: A radio terminal (1100A) comprises a communication unit (1120), a measurement unit (1140A), a measurement unit (1140B), and a control unit (1160A). The communication unit (1120) selects one of the CDMA (Code Division Multiple Access) scheme and the OFDM (Orthogonal Frequency Division Multiplexing) scheme as a communication scheme to be used in a cell formed by a radio base station and performs radio communication. The measurement unit (1140A) measures the receiving quality relating to the time difference between the preceding wave of a received signal and the delayed wave thereof in the OFDM scheme. The measurement unit (1140B) measures the receiving quality of a received signal in the CDMA scheme.

Abstract: A radio communication system comprises: a radio base station, a terminal device, and a plurality of relay devices that relay radio communication between the radio base station and the terminal device. The plurality of relay devices create communication quality information in radio communication between the relay devices and the radio base station. The terminal device preferentially connects to the relay device having the best communication quality based on each of the communication quality information.

Abstract: A base station device according to the present invention includes: a first reception weight calculator 122 configured to calculate weight of each antenna element of an array antenna 114 to be used in communications with a first mobile station device by using a reference signal transmitted from the first mobile station device; and a second reception weight calculator 124 configured to calculate weight of each antenna element of the array antenna 114 to be used in communications with a second mobile station device, which is different from, the first mobile station device of the multiple mobile station devices, the second reception weight calculator 124 calculating the weight so that null can be directed to an arriving direction of the reference signal transmitted from the first mobile station device, the arriving direction being determined on the basis of weight calculated by the first reception weight calculator 122.

Abstract: A radio base station 1 used in a radio communication system in which an SC-FDMA scheme is adopted for an uplink and an OFDMA scheme is adopted for a downlink, comprises: a receiver 140 configured to perform reception processing on a radio signal in the SC-FDMA scheme or the OFDMA scheme; an OFDM demodulator 150 configured to convert a received signal obtained by the receiver 140 from a time domain to a frequency domain and perform a primary demodulation of the resultant signal; a frame processor 170 configured to convert a data symbol obtained by the OFDM demodulator from a frequency domain to a time domain and perform a secondary demodulation of the resultant symbol; and a measurement unit 210 configured to measure a signal which is a signal after conversion to the frequency domain by the OFDM demodulator 150 and is the signal before conversion to the time domain by the frame processor 170.

Abstract: A radio base station 1 used in an FDD radio communication system in which an uplink frequency band is different from a downlink frequency band, comprises: an antenna 110; a duplexer 130 configured to extract a signal component of the uplink frequency band from a radio signal received by the antenna; a frequency converter 120 provided on a signal path between the antenna 110 and the duplexer 130 and is configured to convert a signal component of the downlink frequency band contained in the radio signal received by the antenna 110 to a signal component of the uplink frequency band; and a measurement unit 210 configured to perform a measurement on the signal component of the uplink frequency band extracted by the duplexer.

Abstract: A method of estimating a location of a mobile station is disclosed. A received signal strength of a signal transmitted from a base station is measured. Based on the received signal strength, determination is made whether a signal propagation path to the base station is non-line-of-sight. If the signal propagation path is non-line-of-sight, a distance to the base station is estimated based on a propagation model of the base station.

Abstract: A portable terminal is provided, which includes a communication unit that transmits/receives a signal modulated by a predetermined modulation method to/from three or more base stations; a storage unit which stores in advance a plurality of propagation models indicating propagation environments of the signal for respective combinations of the base stations and stores in advance position information of the base stations; and a control unit that controls the communication unit and the storage unit; wherein the control unit specifies a propagation model that corresponds to a combination of the base stations among the plurality of propagation models stored in the storage unit based on the signal and calculates communicable distances of the signal based on the corresponding propagation model, calculates circles having the corresponding communicable distances as their radii and having positions of the base stations as their centers, respectively, obtains an overlapping area where the circles overlap one another, and

Abstract: A radio terminal (1100A) comprises a communication unit (1120), a measurement unit (1140A), a measurement unit (1140B), and a control unit (1160A). The communication unit (1120) selects one of the CDMA (Code Division Multiple Access) scheme and the OFDM (Orthogonal Frequency Division Multiplexing) scheme as a communication scheme to be used in a cell formed by a radio base station and performs radio communication. The measurement unit (1140A) measures the receiving quality relating to the time difference between the preceding wave of a received signal and the delayed wave thereof in the OFDM scheme. The measurement unit (1140B) measures the receiving quality of a received signal in the CDMA scheme.

Abstract: A pointing device includes a displacement detection section that detects an amount of displacement and a direction of displacement of the self-pointing device; a wireless communication section that transmits information of the amount of displacement and the direction of displacement which are detected by the displacement detection section as a radio signal; one or a plurality of contact detection sections that detect the presence or the absence of a contact; and a power source control section that, while at least one of the contact detection sections detects any contact, supplies electric power to the wireless communication section and the displacement detection section, and that, while none of the contact detection sections detects any contact, does not supply electric power to the wireless communication section and the displacement detection section.

Abstract: A method of estimating a location of a mobile station is disclosed. A received signal strength of a signal transmitted from a base station is measured. Based on the received signal strength, determination is made whether a signal propagation path to the base station is non-line-of-sight. If the signal propagation path is non-line-of-sight, a distance to the base station is estimated based on a propagation model of the base station.

Abstract: A portable terminal is provided, which includes a communication unit that transmits/receives a signal modulated by a predetermined modulation method to/from three or more base stations; a storage unit which stores in advance a plurality of propagation models indicating propagation environments of the signal for respective combinations of the base stations and stores in advance position information of the base stations; and a control unit that controls the communication unit and the storage unit; wherein the control unit specifies a propagation model that corresponds to a combination of the base stations among the plurality of propagation models stored in the storage unit based on the signal and calculates communicable distances of the signal based on the corresponding propagation model, calculates circles having the corresponding communicable distances as their radii and having positions of the base stations as their centers, respectively, obtains an overlapping area where the circles overlap one another, and

Abstract: A base station device according to the present invention includes: a first reception weight calculator 122 configured to calculate weight, of each antenna element of an array antenna 114 to be used in communications with a first mobile station device by using a reference signal transmitted from the first mobile station device; and a second reception weight calculator 124 configured to calculate weight of each antenna element of the array antenna 114 to be used in communications with a second mobile station device, which is different from, the first mobile station device of the multiple mobile station devices, the second reception weight calculator 124 calculating the weight so that null can be directed to an arriving direction of the reference signal transmitted from the first mobile station device, the arriving direction being determined on the basis of weight calculated by the first reception weight calculator 122.