Patents by Inventor Wataru Ohuchi

Wataru Ohuchi 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: 20200084005
    Abstract: Provided is a terminal apparatus capable of efficiently performing uplink and/or downlink communication. A coding unit (1071) configured to divide a transport block into multiple CBs and code each of the multiple CBs, a transmitter (107) configured to transmit the transport block by using a PUSCH, and a receiver (105) configured to receive a first HARQ-ACK are included, wherein each of the multiple CBs is included in any one of multiple CBGs, the first HARQ-ACK includes a second HARQ-ACK for each of the multiple CBGs or a third HARQ-ACK for the transport block, in a case that a signal waveform applied to the PUSCH is OFDM, whether the first HARQ-ACK includes the second HARQ-ACK or the third HARQ-ACK is given based on higher layer signaling, and in a case that a signal waveform applied to the PUSCH is DFT-s-OFDM, the first HARQ-ACK includes the third HARQ-ACK.
    Type: Application
    Filed: May 21, 2018
    Publication date: March 12, 2020
    Inventors: Tomoki YOSHIMURA, Shouichi SUZUKI, Wataru OHUCHI, Liqing LIU
  • Publication number: 20190280842
    Abstract: Uplink control information can be efficiently transmitted. A terminal apparatus (1): (i) receives an uplink grant used for scheduling of a PUSCH and an uplink grant used for scheduling of a sPUSCH; (ii) transmits uplink control information; and (iii) in a first case of performing sPUSCH transmission in a first subframe in the primary cell and performing PUSCH transmission in the first subframe in the secondary cell, transmits the uplink control information by using the PUSCH in the first subframe in the secondary cell.
    Type: Application
    Filed: April 20, 2017
    Publication date: September 12, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shoichi SUZUKI, Tatsushi AIBA, Kimihiko IMAMURA, Wataru OHUCHI, Takashi HAYASHI, Tomoki YOSHIMURA, Liqing LIU
  • Publication number: 20190158327
    Abstract: Uplink control information can be efficiently transmitted. A terminal apparatus (1) receives an uplink grant used for scheduling of a PUSCH in a serving cell and an uplink grant used for scheduling of a sPUSCH in the serving cell, transmits a periodic channel state information report by using the PUCCH in the serving cell, and in a case that transmission of the sPUSCH occurs in a subframe in which transmission of the periodic channel state information report by using the PUCCH has already started, stops the transmission of the PUCCH already started. According to the present invention, the terminal apparatus (1) can efficiently transmit the uplink control information. The base station apparatus (3) can efficiently receive the uplink control information.
    Type: Application
    Filed: April 19, 2017
    Publication date: May 23, 2019
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shoichi SUZUKI, Tatsushi AIBA, Kimihiko IMAMURA, Wataru OHUCHI, Takashi HAYASHI, Tomoki YOSHIMURA, Liqing LIU
  • Publication number: 20190141743
    Abstract: A terminal apparatus capable of efficiently performing a random access procedure is a terminal apparatus that communicates with a base station apparatus by using multiple serving cells including a primary cell and one or multiple secondary cells, and includes a medium access control layer processing unit (15) for starting a random access procedure in any one of the multiple serving cells based on a PDCCH order, a transmitter (10) for transmitting a random access preamble in any one of the multiple serving cells, and a receiver (10) for receiving a random access response, in which the medium access control layer processing unit (15), in a case that reception of the random access response is considered not successful, determines whether to automatically resume transmission of the random access preamble or not, at least based on which of the primary cell and the secondary cell is used to transmit the random access preamble.
    Type: Application
    Filed: February 28, 2017
    Publication date: May 9, 2019
    Inventors: SHOICHI SUZUKI, TATSUSHI AIBA, WATARU OHUCHI, TOMOKI YOSHIMURA, LIQING LIU
  • Publication number: 20190132871
    Abstract: A terminal apparatus (1) capable of efficiently performing a random access procedure includes a medium access control layer processing unit (15) for starting a random access procedure based on a PDCCH order, a transmitter (10) for transmitting a random access preamble by using a Physical Random Access CHannel (PRACH), and a transmit power controller (17) for setting transmit power for transmitting the random access preamble based on a transmission counter, in which the transmission counter is configured at least based on a first piece of information and a second piece of information included in the PDCCH order, the first piece of information is used for indicating the random access preamble, and the second piece of information is used for selecting a resource of the PRACH.
    Type: Application
    Filed: February 28, 2017
    Publication date: May 2, 2019
    Inventors: SHOICHI SUZUKI, TATSUSHI AIBA, WATARU OHUCHI, TOMOKI YOSHIMURA, LIQING LIU
  • Publication number: 20190053131
    Abstract: A terminal apparatus transmits a system information request to request transmission of a first piece of on-demand SI among multiple pieces of on-demand SI, and monitors the first piece of on-demand SI based on transmission of a system information request to request transmission of the first piece of on-demand SI, the first piece of on-demand SI is monitored during a first window included in a monitoring window, a duration of the monitoring window is at least based on a transmission timing of a system information request to request transmission of the first piece of on-demand SI, and the first window is given at least based on information included in non-demand SI.
    Type: Application
    Filed: January 19, 2017
    Publication date: February 14, 2019
    Inventors: SHOICHI SUZUKI, TATSUSHI AIBA, WATARU OHUCHI, TAKASHI HAYASHI
  • Publication number: 20190037479
    Abstract: A terminal apparatus 1 receives non-demand System Information (SI) including information for indicating on-demand SI supported by a cell, and transmits a system information request to request transmission of on-demand SI supported by the cell, the on-demand SI is transmitted based on the system information request, and the non-demand SI is transmitted regardless of the system information request.
    Type: Application
    Filed: January 19, 2017
    Publication date: January 31, 2019
    Inventors: SHOICHI SUZUKI, TATSUSHI AIBA, WATARU OHUCHI, TAKASHI HAYASHI
  • Patent number: 10015823
    Abstract: A terminal device includes a transmitter that transmits a random access preamble, a higher layer processor that configures, based on a higher layer signal, a first identity corresponding to a first component carrier group and a second identity corresponding to a second component carrier group; a counter that, in a case that two or more component carriers are configured for an uplink, counts a number of transmission of the random access preamble; and a medium access control (MAC) layer processor that indicates a random access problem to an upper layer in a case that the number exceeds a maximum number of transmission of the random access preamble on a master component carrier of the first component carrier group or a master component carrier of the second component carrier group.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 3, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Wataru Ohuchi, Shohei Yamada, Yasuyuki Kato, Daiichiro Nakashima, Katsunari Uemura
  • Publication number: 20160262187
    Abstract: A terminal device includes a transmitter that transmits a random access preamble, a higher layer processor that configures, based on a higher layer signal, a first identity corresponding to a first component carrier group and a second identity corresponding to a second component carrier group; a counter that, in a case that two or more component carriers are configured for an uplink, counts a number of transmission of the random access preamble; and a medium access control (MAC) layer processor that indicates a random access problem to an upper layer in a case that the number exceeds a maximum number of transmission of the random access preamble on a master component carrier of the first component carrier group or a master component carrier of the second component carrier group.
    Type: Application
    Filed: March 8, 2016
    Publication date: September 8, 2016
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Wataru OHUCHI, Shohei YAMADA, Yasuyuki KATO, Daiichiro NAKASHIMA, Katsunari UEMURA
  • Publication number: 20120002555
    Abstract: A method of detecting random access problems in a mobile station apparatus which uses multiple component carriers to perform random access. To achieve this, the mobile station apparatus, which is in a mobile communication system comprised of a base station apparatus and mobile station apparatuses, uses one random access channel transmission counter to detect random access problems in the plurality of component carriers.
    Type: Application
    Filed: February 17, 2010
    Publication date: January 5, 2012
    Inventors: Wataru Ohuchi, Shohei Yamada, Yasuyuki Kato, Daiichiro Nakashima, Katsunari Uemura