Patents by Inventor Junji OTONARI
Junji OTONARI 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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Patent number: 10299277Abstract: A base station including: a memory, and a processor coupled to the memory and configured to: wirelessly communicate with one or more terminals via a plurality of component carriers of carrier aggregation, and allocate each of the plurality of component carriers to each of the one or more terminals based on both of each number of terminals allocated to each component carrier and each wireless quality of each component carrier for each terminal.Type: GrantFiled: April 25, 2016Date of Patent: May 21, 2019Assignee: FUJITSU LIMITEDInventor: Junji Otonari
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Patent number: 10111183Abstract: A method includes identifying a first quality of a first signal transmitted from a first terminal device to a first base station, executing a first determination to identify whether the first quality is larger than or equal to a first value, transmitting a first result of the first determination to a control apparatus, identifying a second quality of a second signal transmitted from a second terminal device to a second base station, executing a second determination to identify whether the second quality is larger than or equal to a second value, transmitting a second result of the second determination to the control apparatus, and when the first result indicates that the first quality is less than the first value, and the second result indicates that the second quality is larger than or equal to the second value, the first base station executes transmission power control of the first signal.Type: GrantFiled: June 8, 2017Date of Patent: October 23, 2018Assignee: FUJITSU LIMITEDInventor: Junji Otonari
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Patent number: 9961645Abstract: A base station device includes: an acquisition unit that acquires reception quality of each of a plurality of carriers from a terminal device that performs primary cell connection for transmission and reception of a control channel signal using a carrier whose reception quality is most preferable; a decision unit that decides an amount of increase in transmission power of one of the carriers based on the reception quality acquired by the acquisition unit; a determination unit that estimates whether switching of the primary cell connection occurs in case of increasing the transmission power by the amount of increase and determines whether to increase the transmission power according to the estimation result; and an instruction unit that instructs a transmission unit to increase the transmission power of the carrier by the amount of increase when the determination unit determines to increase the transmission power.Type: GrantFiled: February 2, 2016Date of Patent: May 1, 2018Assignee: FUJITSU LIMITEDInventors: Kotaro Shiizaki, Junji Otonari, Nobukazu Fudaba
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Publication number: 20180041968Abstract: A method includes identifying a first quality of a first signal transmitted from a first terminal device to a first base station, executing a first determination to identify whether the first quality is larger than or equal to a first value, transmitting a first result of the first determination to a control apparatus, identifying a second quality of a second signal transmitted from a second terminal device to a second base station, executing a second determination to identify whether the second quality is larger than or equal to a second value, transmitting a second result of the second determination to the control apparatus, and when the first result indicates that the first quality is less than the first value, and the second result indicates that the second quality is larger than or equal to the second value, the first base station executes transmission power control of the first signal.Type: ApplicationFiled: June 8, 2017Publication date: February 8, 2018Applicant: FUJITSU LIMITEDInventor: Junji OTONARI
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Patent number: 9699796Abstract: A HeNB includes a CQI acquiring unit and an SIR acquiring unit that measure communication qualities of transmission bands on an uplink side and a downlink side. The HeNB, upon detecting an interference difference between bands in a transmission band on each of the uplink side and the downlink side on the basis of a result of measurement of the communication qualities, sets allocation of a band in which the communication quality satisfies a predetermined condition in the transmission band in which the interference difference is detected. The HeNB includes a control unit that, upon detecting signal interference on the downlink side on the basis of the result of the measurement of the communication qualities, controls a band on the downlink side, and controls a band on the uplink side in the transmission band in cooperation with the control on the band on the downlink side.Type: GrantFiled: April 14, 2015Date of Patent: July 4, 2017Assignee: Fujitsu LimitedInventors: Junji Otonari, Dai Kimura
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Publication number: 20160338063Abstract: A base station including: a memory, and a processor coupled to the memory and configured to: wirelessly communicate with one or more terminals via a plurality of component carriers of carrier aggregation, and allocate each of the plurality of component carriers to each of the one or more terminals based on both of each number of terminals allocated to each component carrier and each wireless quality of each component carrier for each terminal.Type: ApplicationFiled: April 25, 2016Publication date: November 17, 2016Inventor: Junji OTONARI
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Publication number: 20160278024Abstract: A base station device includes: an acquisition unit that acquires reception quality of each of a plurality of carriers from a terminal device that performs primary cell connection for transmission and reception of a control channel signal using a carrier whose reception quality is most preferable; a decision unit that decides an amount of increase in transmission power of one of the carriers based on the reception quality acquired by the acquisition unit; a determination unit that estimates whether switching of the primary cell connection occurs in case of increasing the transmission power by the amount of increase and determines whether to increase the transmission power according to the estimation result; and an instruction unit that instructs a transmission unit to increase the transmission power of the carrier by the amount of increase when the determination unit determines to increase the transmission power.Type: ApplicationFiled: February 2, 2016Publication date: September 22, 2016Applicant: FUJITSU LIMITEDInventors: Kotaro Shiizaki, Junji Otonari, Nobukazu Fudaba
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Publication number: 20150365958Abstract: A HeNB includes a CQI acquiring unit and an SIR acquiring unit that measure communication qualities of transmission bands on an uplink side and a downlink side. The HeNB, upon detecting an interference difference between bands in a transmission band on each of the uplink side and the downlink side on the basis of a result of measurement of the communication qualities, sets allocation of a band in which the communication quality satisfies a predetermined condition in the transmission band in which the interference difference is detected. The HeNB includes a control unit that, upon detecting signal interference on the downlink side on the basis of the result of the measurement of the communication qualities, controls a band on the downlink side, and controls a band on the uplink side in the transmission band in cooperation with the control on the band on the downlink side.Type: ApplicationFiled: April 14, 2015Publication date: December 17, 2015Inventors: Junji Otonari, Dai Kimura
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Publication number: 20150319708Abstract: A base station apparatus capable of simultaneously transmitting plural control channels by frequency division multiplexing includes a processor; a baseband processing unit configured to obtain under control of the processor, distance information indicating a distance between the base station apparatus and another base station apparatus, and to configure under the control of the processor and based on the distance indicated by the obtained distance information, an upper limit count for the control channels to be transmitted simultaneously to a terminal device connected to the base station apparatus; and a radio frequency unit configured to transmit under the control of the processor and based on the configured upper limit count, the control channels to the terminal device.Type: ApplicationFiled: July 15, 2015Publication date: November 5, 2015Inventors: Junji Otonari, Dai Kimura
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Patent number: 9179422Abstract: A wireless base station apparatus to establish a wireless connection with a terminal equipment detects an intensity of a signal transmitted from another terminal equipment; calculates, as transmission power for the terminal equipment, a sum of a first parameter adjusted at an interval of predetermined time and a second parameter taking a value between a predetermined first minimum value and a predetermined first maximum value; sets, as the second parameter, the larger value of a difference between first target power and the first parameter and the first minimum value when detecting that reception power of the signal transmitted from another terminal equipment is equal to or larger than a predetermined value, and further sets a difference between the first target power and the first minimum value as the first parameter and the first minimum value as the second parameter when the first parameter is adjusted.Type: GrantFiled: March 6, 2015Date of Patent: November 3, 2015Assignee: FUJITSU LIMITEDInventors: Junji Otonari, Dai Kimura, Michiko Anbe
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Patent number: 9143965Abstract: A wireless station includes: a receiver configured to receive information on a reception quality from a wireless communication apparatus that is connected to the wireless station; and a processor coupled to the receiver and configured to: calculate, based on the reception quality, an index value indicating a difference between a signal-to-interference ratio in the wireless communication apparatus and transmission power of the wireless station, calculate a statistical amount of the index value calculated with regard to each of the plurality of reception qualities, and determine the transmission power in accordance with the statistical amount.Type: GrantFiled: January 10, 2014Date of Patent: September 22, 2015Assignee: FUJITSU LIMITEDInventors: Nobukazu Fudaba, Junji Otonari
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Publication number: 20150181538Abstract: A wireless base station apparatus to establish a wireless connection with a terminal equipment detects an intensity of a signal transmitted from another terminal equipment; calculates, as transmission power for the terminal equipment, a sum of a first parameter adjusted at an interval of predetermined time and a second parameter taking a value between a predetermined first minimum value and a predetermined first maximum value; sets, as the second parameter, the larger value of a difference between first target power and the first parameter and the first minimum value when detecting that reception power of the signal transmitted from another terminal equipment is equal to or larger than a predetermined value, and further sets a difference between the first target power and the first minimum value as the first parameter and the first minimum value as the second parameter when the first parameter is adjusted.Type: ApplicationFiled: March 6, 2015Publication date: June 25, 2015Inventors: Junji Otonari, Dai Kimura, Michiko ANBE
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Patent number: 8942699Abstract: A base station communicates with a mobile station that receives downlink data from the base station and that transmits uplink data to a second base station. The base station includes a data transmitter configured to transmit the downlink data to the mobile station; and a control information receiver configured to receive from the mobile station through a path passing through the second base station, feedback information concerning the downlink data transmitted by the data transmitter.Type: GrantFiled: August 12, 2010Date of Patent: January 27, 2015Assignee: Fujitsu LimitedInventor: Junji Otonari
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Publication number: 20140273875Abstract: A wireless station includes: a receiver configured to receive information on a reception quality from a wireless communication apparatus that is connected to the wireless station; and a processor coupled to the receiver and configured to: calculate, based on the reception quality, an index value indicating a difference between a signal-to-interference ratio in the wireless communication apparatus and transmission power of the wireless station, calculate a statistical amount of the index value calculated with regard to each of the plurality of reception qualities, and determine the transmission power in accordance with the statistical amount.Type: ApplicationFiled: January 10, 2014Publication date: September 18, 2014Applicant: FUJITSU LIMITEDInventors: Nobukazu Fudaba, Junji Otonari
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Publication number: 20110053585Abstract: A base station communicates with a mobile station that receives downlink data from the base station and that transmits uplink data to a second base station. The base station includes a data transmitter configured to transmit the downlink data to the mobile station; and a control information receiver configured to receive from the mobile station through a path passing through the second base station, feedback information concerning the downlink data transmitted by the data transmitter.Type: ApplicationFiled: August 12, 2010Publication date: March 3, 2011Applicant: FUJITSU LIMITEDInventor: Junji OTONARI