Patents by Inventor Osamu Nakamura

Osamu Nakamura 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).

  • Publication number: 20180279317
    Abstract: A base station device, a terminal device, and a communication method are provided, and the terminal efficiently learns information of an interference signal and reduces interference in a reception process to enhance throughput and enhance communication opportunity of each terminal device by feedback from the terminal. The base station device includes a transmission unit configured to transmit, to the terminal device, assist information of Multiuser Superposition Transmission (MUST), and the assist information includes information indicating whether precoding types of terminal devices configured with the MUST are identical to each other or different from each other.
    Type: Application
    Filed: August 26, 2016
    Publication date: September 27, 2018
    Inventors: RYOTA YAMADA, JUNGO GOTO, OSAMU NAKAMURA
  • Publication number: 20180259059
    Abstract: A motor with speed reduction mechanism is provided with an anti-scattering cover 80 for grease, which holds grease applied to a mating part MT where a worm 36b and a worm wheel 40 are in engagement with each other, the anti-scattering cover 80 for grease is provided and closer to an opening 32c than the worm wheel 40 along an axial direction of the worm wheel 40. The anti-scattering cover 80 for grease has: a first wall 81 extending from the opening 32c toward a bottom 32a and formed between the worm 36b and a side wall 32b of a speed reduction mechanism housing unit 32; and a second wall 82 extending in a direction intersecting with the first wall 81 and covering the mating part MT from the same side as the opening 32c along the axial direction of the worm wheel 40.
    Type: Application
    Filed: November 9, 2015
    Publication date: September 13, 2018
    Inventors: Osamu Nakamura, Atsushi Kawasaki
  • Publication number: 20180262238
    Abstract: The present invention provides a base station device, a terminal device, and a communication method, where the terminal efficiently learns information of an interference signal and reduces interference in a reception process to make it possible to enhance throughput, enhance communication opportunity of each terminal device by feedback from the terminal, and the like. The base station device includes a transmission unit configured to transmit, to the terminal device, Multiuser Superposition Transmission (MUST) information used for canceling interference due to MUST. The MUST information includes multiple combinations of modulation schemes for the MUST, and a list of power ratios used for the MUST in each of the combinations of the modulation schemes.
    Type: Application
    Filed: August 26, 2016
    Publication date: September 13, 2018
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: RYOTA YAMADA, JUNGO GOTO, OSAMU NAKAMURA
  • Patent number: 10034306
    Abstract: In an LTE-A system, there is a problem that it is difficult to perform stable communication in a case where there is a time when another system occupies an unlicensed band being used. There is provided a base station apparatus that communicates with a terminal device in a second frequency band different from a first frequency band capable of being used as a dedicated frequency band. The base station apparatus includes: a CS determination unit that performs carrier sense in a subframe of carrier sense configured in the second frequency band; a synchronization signal generation unit that generates a synchronization signal; and a wireless transmission unit that transmits the synchronization signal. In a case where the CS determination unit determines that another system does not perform communication in the second frequency band, the wireless transmission unit transmits the synchronization signal generated by the synchronization signal generation unit.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: July 24, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Jungo Goto, Osamu Nakamura, Hiromichi Tomeba, Shiro Wakahara, Yasuhiro Hamaguchi
  • Publication number: 20180160401
    Abstract: In a base station device for transmitting data signals to a plurality of terminal devices, the base station device includes a signal multiplexing unit that multiplexes data signals for at least a first terminal device and a second terminal device, a control information generation unit that generates, for the first terminal device, control information containing information related to the data signal destined for the second terminal device, and a radio receiving unit that receives information of a reception processing capability of each terminal device.
    Type: Application
    Filed: April 14, 2016
    Publication date: June 7, 2018
    Applicant: Shark Kabushiki Kaisha
    Inventors: JUNGO GOTO, OSAMU NAKAMURA, YASUHIRO HAMAGUCHI
  • Publication number: 20180146502
    Abstract: A base station apparatus, a terminal apparatus, and a communication method that make it possible to achieve reduction in delay of communication are provided. A base station apparatus of the present invention is a base station apparatus for performing communication with a terminal apparatus under a first communication scheme or a second communication scheme. The first and second communication schemes differs in allowable delay time from each other. The base station apparatus notifies the terminal apparatus of pre-scheduling information including information indicating a plurality of resource candidates that are used in the first communication scheme. The base station apparatus enters a receiving operation of the first communication scheme in a resource indicated by the plurality of resource candidates.
    Type: Application
    Filed: May 13, 2016
    Publication date: May 24, 2018
    Inventors: HIROMICHI TOMEBA, RYOTA YAMADA, KATSUYA KATO, JUNGO GOTO, OSAMU NAKAMURA, TOMOKI YOSHIMURA, YASUHIRO HAMAGUCHI
  • Publication number: 20180115385
    Abstract: A signal that is transmitted to a terminal apparatus itself is demodulated with high precision, and throughput is improved. A terminal apparatus that communicates with a base station apparatus includes: a reception unit that receives downlink control information from the base station apparatus; and a signal detection unit that demodulates a signal that is transmitted to the terminal apparatus itself, based on first modulation mapping, and demodulates an interference signal based on second modulation mapping, in a case where information relating to a transmit power of the interference signal is included in the downlink control information.
    Type: Application
    Filed: February 24, 2016
    Publication date: April 26, 2018
    Inventors: KATSUYA KATO, TOMOKI YOSHIMURA, OSAMU NAKAMURA, RYOTA YAMADA, HIROMICHI TOMEBA, JUNGO GOTO, YASUHIRO HAMAGUCHI
  • Patent number: 9955433
    Abstract: In a case where transmission power control is performed for a plurality of CCs in CA, information transmitted between a transmitter and a receiver in terms of the transmission power control is reduced. A wireless communication apparatus according to the present invention is a wireless communication apparatus configured to perform communication using at least two or more types of component carriers, including transmission power control units 106-1 to 106-3 configured to select one calculation formula from a plurality of different calculation formulas depending on a type of the component carrier and calculate transmission power of the component carrier, and an RF unit 107 configured to perform communication using the component carrier based on the calculated transmission power.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: April 24, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Hayashi, Hiroki Takahashi, Jungo Goto, Osamu Nakamura, Kazunari Yokomakura, Yasuhiro Hamaguchi
  • Publication number: 20180102882
    Abstract: The objective of the invention is to achieve efficient downlink non-orthogonal multiple access using a limited amount of control information. A base station device that adds and transmits symbols addressed to a first terminal device and one or more second terminal devices, using portion of available subcarriers, includes: a power setting unit that sets the first terminal device to a lower energy than the one or more second terminal devices; a scheduling unit that, for signals addressed to the one or more second terminal devices, performs resource allocation that is different from resource allocation for a signal addressed to the first terminal device; and an MCS determining unit that controls modulation schemes such that, when allocating resources for the signal addressed to the first terminal device, the modulation schemes used by the one or more second terminal devices, to be added to the signal addressed to the first terminal device, are the same.
    Type: Application
    Filed: May 13, 2016
    Publication date: April 12, 2018
    Inventors: OSAMU NAKAMURA, TOMOKI YOSHIMURA, JUNGO GOTO, YASUHIRO HAMAGUCHI
  • Publication number: 20180097575
    Abstract: Provided are a base station apparatus, a terminal apparatus, and a communication method, in all of which interference is reduced to improve throughput and to increase more opportunity for communication by each terminal apparatus.
    Type: Application
    Filed: February 24, 2016
    Publication date: April 5, 2018
    Inventors: HIROMICHI TOMEBA, RYOTA YAMADA, KATSUYA KATO, JUNGO GOTO, OSAMU NAKAMURA, TOMOKI YOSHIMURA, YASUHIRO HAMAGUCHI
  • Publication number: 20180077687
    Abstract: A signal that is transmitted to a terminal apparatus itself is demodulated with high precision, and throughput is improved. A terminal apparatus that communicates with a base station apparatus includes a signal detection unit that demodulates a signal that is transmitted to the terminal apparatus itself, based on first modulation mapping in a case where a predetermined transmission mode is configured, and that demodulates a signal based on second modulation mapping in a case where a transmission mode other than the predetermined transmission mode is configured.
    Type: Application
    Filed: February 24, 2016
    Publication date: March 15, 2018
    Inventors: TOMOKI YOSHIMURA, KATSUYA KATO, OSAMU NAKAMURA, RYOTA YAMADA, HIROMICHI TOMEBA, JUNGO GOTO, YASUHIRO HAMAGUCHI
  • Publication number: 20180053895
    Abstract: The present invention provides a display device and a manufacturing method thereof that can simplify manufacturing steps and enhance efficiency in the use of materials, and further, a manufacturing method that can enhance adhesiveness of a pattern. One feature of the invention is that at least one or more patterns needed for manufacturing a display panel, such as a conductive layer forming a wiring or an electrode or a mask for forming a desired pattern is/are formed by a method capable of selectively forming a pattern, thereby manufacturing a display panel.
    Type: Application
    Filed: October 13, 2017
    Publication date: February 22, 2018
    Inventors: Osamu NAKAMURA, Gen FUJII, Fuminori TATEISHI
  • Publication number: 20180035386
    Abstract: A reduction in interference improves throughput and increase opportunity for communication by each terminal apparatus. A base station apparatus that communicates with a terminal apparatus transmits information relating to a transmit power for a UE-specific reference signal in a state of being included in downlink control information, in a case of a predetermined transmission mode. A terminal apparatus that communicates with a base station apparatus includes a reception unit that receives downlink control information which includes information relating to a transmit power for a UE-specific reference signal, from the base station apparatus, in a case of a predetermined transmission mode, and a reception signal is demodulated based on the downlink control information.
    Type: Application
    Filed: January 29, 2016
    Publication date: February 1, 2018
    Applicant: Sharp Kabushiki Kaisha
    Inventors: RYOTA YAMADA, HIROMICHI TOMEBA, KATSUYA KATO, JUNGO GOTO, OSAMU NAKAMURA, TOMOKI YOSHIMURA, YASUHIRO HAMAGUCHI
  • Publication number: 20180035390
    Abstract: In downlink non-orthogonal access, favorable transmission characteristics are achieved without significantly increasing the amount of control information. A base station apparatus includes a first modulation symbol generation unit which generates a first modulation symbol, a second modulation symbol generation unit which generates a second modulation symbol in consideration of a bit sequence configuring the first modulation symbol, a power assignment unit which assigns different transmit powers to the first modulation symbol and the second modulation symbol, and a signal addition unit which adds the first modulation symbol and the second modulation symbol.
    Type: Application
    Filed: January 14, 2016
    Publication date: February 1, 2018
    Inventors: OSAMU NAKAMURA, JUNGO GOTO, YASUHIRO HAMAGUCHI
  • Publication number: 20180007665
    Abstract: In M2M communication, data transmission is performed 4 msec after control information for dynamic scheduling is received from a base station apparatus, and the data transmission that needs immediacy has more overhead. In a case where a transmission apparatus performs data transmission to a reception apparatus, there are a first transmission mode in which a data signal based on a transmission parameter included in the received control information is transmitted, and a second transmission mode in which the control signal information is not received, and the data signal is transmitted without the reception apparatus being notified of a transmission timing of the data signal. In a case where transmission of an SR is possible and in a case where data communication is possible with the first transmission mode and the second transmission mode, the transmission apparatus configures different transmission powers in accordance with the transmission modes.
    Type: Application
    Filed: December 22, 2015
    Publication date: January 4, 2018
    Inventors: Jungo GOTO, Osamu NAKAMURA, Yasuhiro HAMAGUCHI
  • Patent number: 9820163
    Abstract: There are provided a base station apparatus, a terminal apparatus, and a communication method which are capable of realizing a LTE-A system with improved throughput by performing a CA technology including an unlicensed band while suppressing interference from an existing system. A base station apparatus according to the present invention is a base station apparatus which is included in a communication system that applies a communication scheme applied to a first frequency band capable of being used as a dedicated frequency band to a second frequency band different from the first frequency band and is capable of communicating with a terminal apparatus by using the second frequency band and the second frequency band. The base station apparatus synchronizes a frame number of a frame of a first signal transmitted using the first frequency band with a frame number of a frame of a second signal irrespective of whether or not the second signal transmitted using the second frequency band is transmitted.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: November 14, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiromichi Tomeba, Jungo Goto, Osamu Nakamura, Shiro Wakahara, Yasuhiro Hamaguchi
  • Patent number: 9793482
    Abstract: The present invention provides a display device and a manufacturing method thereof that can simplify manufacturing steps and enhance efficiency in the use of materials, and further, a manufacturing method that can enhance adhesiveness of a pattern. One feature of the invention is that at least one or more patterns needed for manufacturing a display panel, such as a conductive layer forming a wiring or an electrode or a mask for forming a desired pattern is/are formed by a method capable of selectively forming a pattern, thereby manufacturing a display panel.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: October 17, 2017
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Osamu Nakamura, Gen Fujii, Fuminori Tateishi
  • Publication number: 20170288754
    Abstract: Provided are a base station apparatus, a terminal device, and a communication method that can realize a small cell network while reducing load on the terminal device, the small cell network including a small cell performing massive MIMO transfer. The base station apparatus of the present invention is a second base station apparatus included in a communication system in which a plurality of the second base station apparatuses capable of acquiring assistance information from a first base station apparatus communicates with a terminal device, the base station apparatus including a codebook that describes a plurality of linear filters, in which the same cell identification number as at least one of the other second base station apparatuses is configured, and a synchronization signal correlated with the cell identification number is transmitted on the basis of the plurality of linear filters after first precoding of the synchronization signal.
    Type: Application
    Filed: August 28, 2015
    Publication date: October 5, 2017
    Inventors: Hiromichi TOMEBA, Jungo GOTO, Osamu NAKAMURA, Shiro WAKAHARA, Yasuhiro HAMAGUCHI
  • Publication number: 20170279561
    Abstract: Symbol replica precision is improved when symbol-level cancellation is performed in a receiver in downlink non-orthogonal access. Transmission is performed by multiplexing a transmission scheme by which excellent performance is obtained during demodulation and a transmission scheme by which excellent performance is obtained during decoding. Provided is a base station device including an addition unit that adds a number of signals the number exceeding a number of transmit antenna ports at the same time and the same frequency, and performing transmission from one or more transmit antenna ports. The addition unit adds signals generated by mutually different transmission schemes. Provided is a terminal device that receives a signal in which a number of signals generated by mutually different transmission schemes are added, the number exceeding a number of transmit antenna ports, at the same time and the same frequency.
    Type: Application
    Filed: August 28, 2015
    Publication date: September 28, 2017
    Inventors: Osamu NAKAMURA, Jungo GOTO, Yasuhiro HAMAGUCHI
  • Publication number: 20170279503
    Abstract: Provided are a base station apparatus, a terminal device, and a communication method that can realize a small cell network while reducing load on the terminal device, the small cell network including a small cell performing massive MIMO transfer. The base station apparatus of the present invention is a second base station apparatus included in a communication system in which a plurality of the second base station apparatuses capable of acquiring assistance information from a first base station apparatus communicates with a terminal device, the base station apparatus including a codebook that describes a plurality of linear filters, in which the same cell identification number as at least one of the other second base station apparatuses is configured, and a synchronization signal correlated with the cell identification number is transmitted on the basis of the plurality of linear filters after first precoding of the synchronization signal.
    Type: Application
    Filed: August 28, 2015
    Publication date: September 28, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hiromichi TOMEBA, Jungo GOTO, Osamu NAKAMURA, Shiro WAKAHARA, Yasuhiro HAMAGUCHI