Patents by Inventor Koichi Ishihara
Koichi Ishihara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230292140Abstract: A determination method of determining an installation position of a movable base station and a connection destination base station, executed by an information processing device including a memory and a processor, includes: determining a mesh in which the movable base station can be installed, and a base station to which the movable base station can be connected in the mesh, based on a reception strength of a radio signal from each of one or more base stations in each of one or more meshes.Type: ApplicationFiled: August 25, 2020Publication date: September 14, 2023Inventors: Toshiro NAKAHIRA, Motoharu SASAKI, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
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Publication number: 20230262476Abstract: A radio signal strength information calculation method performed by a control apparatus includes: a generation step of calculating radio information regarding each of a plurality of meshes into which an area where base stations are placed is divided and generating mesh radio information; and a calculation step of placing a virtual base station at a position to where any of the base stations would be moved in the area, and calculating radio signal strength information between a plurality of base stations including the base stations and the virtual base station based on the mesh radio information.Type: ApplicationFiled: August 26, 2020Publication date: August 17, 2023Inventors: Toshiro NAKAHIRA, Motoharu SASAKI, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
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Publication number: 20230247441Abstract: A method of determining a location at which a movable base station is to be installed is provided. In the method, an information processing device performs first determination processing of determining a base station providing radio communication that does not satisfy a predetermined condition based on information of a radio signal of each base station, second determination processing of determining a number of virtual terminals to be set in a coverage area of the base station providing the radio communication that does not satisfy the predetermined condition based on the information of the radio signal of the base station, and third determination processing of determining the location at which the movable base station is to be installed based on a location of each virtual terminal set in the coverage area of the base station providing the radio communication that does not satisfy the predetermined condition.Type: ApplicationFiled: August 25, 2020Publication date: August 3, 2023Inventors: Toshiro NAKAHIRA, Motoharu SASAKI, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
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Publication number: 20230224737Abstract: An information processing method includes: an association step of associating pieces of wireless signal information that are respectively transmitted by a plurality of base stations and are measured at a plurality of measurement positions with cells of the base stations, for each of the measurement positions; and an interference calculation step of calculating interference between cells of the plurality of base stations based on the pieces of wireless signal information associated with the cells of the base stations.Type: ApplicationFiled: June 8, 2020Publication date: July 13, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Koichi ISHIHARA, Takatsune MORIYAMA
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Publication number: 20230200459Abstract: A wearable article includes a front and back elastic belts, a crotch region, a waist opening, and leg openings. Each elastic belt is a laminate having an inner sheet, an outer sheet, and an elastic member. Elastic adhesive bonding continuously bonds the elastic member for at least about 10 mm in the direction of stretch adjacent the side edges of the belts. A discrete patterned adhesive bonding is applied to at least one of the inner and outer sheets to intermittently bond the inner and outer sheets. The discrete patterned adhesive bonding extends substantially along the transverse direction between the elastic adhesive bonding, and substantially along the longitudinal direction between the distal and proximal edges of the elastic belts. The same adhesive agent provides the elastic adhesive and discrete patterned adhesive bonding. Heat bonds form side seams, and the remainder of the laminate is free of heat bonds.Type: ApplicationFiled: February 17, 2023Publication date: June 29, 2023Inventors: Shiqiao LI, Ruizhi PEI, Kaoru ISHIHARA, Koichi MORIMOTO, Xuechun WANG, Ling TONG, John Andrew STRASEMEIER, Vanessa Marie MELENDEZ, Monica Renee TOURNOUX
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Publication number: 20230142888Abstract: In a wireless communication system including a plurality of base stations to which one or more terminal stations are connectable, and a base station control device which controls each of the base stations, the base station control device includes an information collection unit configured to collect connection information regarding the terminal stations connected to the base stations from each of the base stations, a list generation unit configured to generate a white list indicating the terminal stations which are allowed to be connected to the base stations for each of the base stations based on the connection information, and a transmission unit configured to transmit the white list generated by the list generation unit to each of the base stations, and each of the base stations includes a reception unit configured to receive the white list transmitted by the transmission unit, and a setting unit configured to perform setting so as to allow or inhibit connection of each of the terminal stations to the baseType: ApplicationFiled: January 28, 2020Publication date: May 11, 2023Inventors: Hirantha ABEYSEKERA, Toshiro NAKAHIRA, Shoko SHINOHARA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230137745Abstract: A wireless communication system includes a wireless base station that performs wireless communication with a wireless terminal; and a wireless communication control station that is communicably connected to the wireless base station. The wireless communication control station includes a determination unit that determines a requirement that is prioritized among multiple types of requirements in wireless communication, a setting unit that sets the information indicating the parameter to be used for communication control by the wireless base station, and a transmission unit that transmits the information set by the setting unit to the wireless base station.Type: ApplicationFiled: March 18, 2020Publication date: May 4, 2023Inventors: Shoko SHINOHARA, Hirantha ABEYSEKERA, Toshiro NAKAHIRA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230121752Abstract: In a wireless communication system including a plurality of base stations to which terminal stations are connectable, and a monitoring station which monitors each of the base stations, the monitoring station includes an information collection unit configured to collect wireless environment information including a plurality of information items indicating wireless environments around the base stations and the terminal stations, from each of the base stations, a defect detection unit configured to detect whether or not one or more defects occur based on a combination of the information items, and a defect determination unit configured to determine estimated occurrence probabilities of the defects detected by the defect detection unit based on a combination of the information items.Type: ApplicationFiled: January 28, 2020Publication date: April 20, 2023Inventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Shoko SHINOHARA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230113366Abstract: In a wireless communication system including a plurality of base stations to which terminal stations are connectable, and a base station control device which controls each of the base stations, the base station control device includes an information collection unit configured to collect wireless environment information indicating wireless environments around the base stations and the terminal stations from each of the base stations, and a policy calculation unit configured to calculate policy for connecting the base stations and the terminal stations based on the wireless environment information collected by the information collection unit, each of the base stations includes a reception unit configured to receive the policy calculated by the policy calculation unit, a transition destination calculation unit configured to calculate a transition destination to which a terminal station left unaccommodated is to be connected based on the policy received by the reception unit, and a transmission unit configured toType: ApplicationFiled: January 28, 2020Publication date: April 13, 2023Inventors: Hirantha ABEYSEKERA, Toshiro NAKAHIRA, Shoko SHINOHARA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230102173Abstract: According to an information processing method of associating a plurality of base stations serving as transmission sources with pieces of information of beacons in a one-to-one manner, the beacons being transmitted by the plurality of base stations in an environment in which cells of the plurality of base stations overlap each other and measured at a plurality of measurement locations, the method includes performing first processing of associating an MAC address and a signal intensity of a beacon transmitted by one or more of the base stations with each of the measurement locations, performing second processing of associating, as a transmission source candidate of the beacon, one or more of the base stations located around each of the measurement locations that have undergone the first processing with the measurement location in ascending order of distance to the measurement location, performing third processing of associating one of the base stations closest to each of the measurement locations as a transmissType: ApplicationFiled: March 17, 2020Publication date: March 30, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230097069Abstract: An embodiment of the present invention is a local wireless communication system that emits a radio wave in a licensed band to form a wireless communication environment in a predetermined area. The system includes a base station configured to emit a radio wave, a plurality of sensors disposed along an edge of the area, and a control apparatus. The sensors each measure a radio field intensity of the radio wave emitted from the base station, and feed the radio field intensity back to the control apparatus via the base station. The control apparatus controls a transmission power of the radio wave from the base station to control the fed radio field intensity.Type: ApplicationFiled: March 2, 2020Publication date: March 30, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Daisuke MURAYAMA, Koichi ISHIHARA, Kenichi KAWAMURA, Takatsune MORIYAMA
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Publication number: 20230087262Abstract: There are provided a collection unit that collects priority information indicating priority of radio communication set for each base station and route information for specifying a wired communication route for each base station, a radio parameter calculation unit that calculates a radio parameter of radio communication of each base station to reflect the priority indicated by the priority information, a wired parameter calculation unit that calculates, for each wired communication route specified by the route information, a wired parameter of wired communication of a corresponding base station based on the radio parameter calculated by the radio parameter calculation unit to reflect the priority indicated by the priority information, and a setting unit that sets the radio parameter calculated by the radio parameter calculation unit for each base station and sets the wired parameter calculated by the wired parameter calculation unit for each wired communication route.Type: ApplicationFiled: March 17, 2020Publication date: March 23, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Koichi ISHIHARA, Takatsune MORIYAMA, Yasushi TAKATORI
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Publication number: 20230049652Abstract: Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.Type: ApplicationFiled: November 1, 2022Publication date: February 16, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Tomoki MURAKAMI, Yusuke ASAI, Riichi KUDO, Koichi ISHIHARA, Masato MIZOGUCHI, Takeo ICHIKAWA
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Publication number: 20230035896Abstract: In a wireless communication system including a plurality of base stations to which terminal stations are connectable and a base station control device which controls each of the base stations, the base station control device includes an information collection unit configured to collect wireless environment information indicating wireless environments around the base stations and the terminal stations from each of the base stations, a parameter calculation unit configured to calculate a parameter for correcting radio wave interference relationship among the base stations based on the wireless environment information collected by the information collection unit and priority set in advance for each of the base stations, and a transmission unit configured to transmit the parameter calculated by the parameter calculation unit to each of the base stations, and each of the base stations includes a reception unit configured to receive the parameter transmitted by the transmission unit, and a setting unit configured tType: ApplicationFiled: January 28, 2020Publication date: February 2, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hirantha ABEYSEKERA, Toshiro NAKAHIRA, Shoko SHINOHARA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230035101Abstract: In a wireless communication system including a plurality of base stations to which terminal stations are connectable, and a monitoring station which monitors each of the base stations, the monitoring station includes an information collection unit configured to collect wireless environment information including a plurality of information items indicating wireless environments around the base stations and the terminal stations, from each of the base stations, a point calculation unit configured to calculate a total point of points to be respectively provided to a plurality of defect items determined in advance in a case where a determination condition determined in advance for each of the information items is satisfied, and a defect detection unit configured to detect whether or not a defect listed as one or more of the defect items occurs based on the total point calculated by the point calculation unit.Type: ApplicationFiled: January 28, 2020Publication date: February 2, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro NAKAHIRA, Hirantha ABEYSEKERA, Shoko SHINOHARA, Koichi ISHIHARA, Yasushi TAKATORI
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Publication number: 20230034313Abstract: In a wireless communication system including an intermediate processing device which performs processing between a plurality of base stations to which terminal stations are connectable and a base station control device which controls each of the base stations, the intermediate processing device includes an information collection unit configured to collect wireless environment information which includes information regarding the terminal stations connected to the base stations and which indicates wireless environments around the base stations and the terminal stations, from each of the base stations, a first conversion unit configured to convert the wireless environment information collected by the information collection unit into first information which is equally processable by the base station control device without distinction for each of the base stations, a transmission unit configured to transmit the first information to the base station control device, a reception unit configured to receive a parameterType: ApplicationFiled: January 28, 2020Publication date: February 2, 2023Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hirantha ABEYSEKERA, Toshiro NAKAHIRA, Shoko SHINOHARA, Koichi ISHIHARA, Yasushi TAKATORI
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Patent number: 11528628Abstract: Provided is a wireless base station which uses distributed antennas and selects a combination of a plurality of wireless terminals and the distributed antennas of a wireless base station that performs multi-user transmission with respect to the plurality of wireless terminals in a multi-BSS wireless environment. The wireless base station includes: a scheduling unit that measures reception power (RSSI) from each wireless terminal at each of the distributed antennas and selects a combination of a plurality of wireless terminals and a plurality of antennas having approximately the same RSSIs in descending order for respective wireless terminals; and a transmission power control unit that sets minimum transmission power corresponding to the RSSI of the antenna when multi-user transmission is performed between the plurality of wireless terminals and the plurality of antennas combined by the scheduling unit.Type: GrantFiled: August 13, 2019Date of Patent: December 13, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Koichi Ishihara, Tomoki Murakami, Hirantha Abeysekera, Toshiro Nakahira, Yasushi Takatori, Takafumi Hayashi
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Patent number: 11509362Abstract: Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.Type: GrantFiled: May 3, 2021Date of Patent: November 22, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Tomoki Murakami, Yusuke Asai, Riichi Kudo, Koichi Ishihara, Masato Mizoguchi, Takeo Ichikawa
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Publication number: 20220369120Abstract: A wireless communication system including a transmitting station and one or more receiving stations, the one or more receiving stations including a receiving station serving as a destination, the receiving station serving as the destination receiving a transmitted signal from the transmitting station, the wireless communication system including a plurality of relay stations located between the transmitting station and the one or more receiving stations, wherein the transmitting station includes a relay station selection unit configured to select at least one relay station that relays the transmitted signal from among the plurality of relay stations, add information for turning on the at least one selected relay station to the transmitted signal, and transmit the transmitted signal, the at least one selected relay station is configured to be turned on in accordance with the information of the transmitted signal to perform a non-regenerative relay of the transmitted signal, and the receiving station serving asType: ApplicationFiled: August 23, 2019Publication date: November 17, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Riku OMIYA, Tomoki MURAKAMI, Koichi ISHIHARA, Takafumi HAYASHI, Yasushi TAKATORI
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Publication number: 20220360318Abstract: A wireless communication system including, a primary transmitting station and a primary receiving station which are being in communication, a secondary transmitting station and one or more secondary receiving stations which use the identical frequency that are used in the above wireless environment, the one or more secondary receiving stations including a secondary receiving station serving as a destination, the secondary receiving station serving as the destination receiving a transmitted signal from the secondary transmitting station, the wireless communication system including a plurality of relay stations located between the secondary transmitting station and the one or more secondary receiving stations, wherein the secondary transmitting station includes a relay station selection unit configured to select at least one relay station that relays the transmitted signal from among the plurality of relay stations, add information for turning on the at least one selected relay station to the transmitted signalType: ApplicationFiled: August 23, 2019Publication date: November 10, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Riku OMIYA, Tomoki MURAKAMI, Koichi ISHIHARA, Takafumi HAYASHI, Yasushi TAKATORI