Patents by Inventor Katsunari Uemura

Katsunari Uemura 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: 20210037557
    Abstract: A method by a user equipment (UE) is described. The method includes determining a repetition level, determining a initialization value for a scrambling sequence generator based on the repetition level, generating the scrambling sequence, and applying the scrambling sequence for a Physical Downlink Shared Channel (PDSCH). The repetition level is associated with the PDSCH and determined by a Radio Resource Control (RRC) configuration.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Inventors: Shohei YAMADA, Katsunari UEMURA, Yasuyuki KATO, Hidekazu TSUBOI
  • Patent number: 10887925
    Abstract: A mobile station (MS) obtains a parameter, performs transmission of a preamble, and sets a counter incremented based on transmission of the preamble. The MS is able to indicate a random access problem corresponding to one transmission timing cell group in a case where the counter reaches the parameter+1 and the transmission of the preamble is performed on the one transmission timing cell group, where the one transmission timing cell group being one of the plurality of transmission timing cell groups, and the MS is able to not indicate a random access problem corresponding to another transmission timing cell group in a case where the counter reaches the parameter+1 and the transmission of the preamble is performed on the another transmission timing cell group, where the another transmission timing cell group being one of the plurality of transmission timing cell groups.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: January 5, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki Kato, Katsunari Uemura, Shoichi Suzuki
  • Patent number: 10873982
    Abstract: Provided is a technique related to a terminal apparatus, a control method, and an integrated circuit that are able to efficiently perform connection control when performing device-to-device communication. At a time of re-establishing radio resource control connection, at least on a basis of whether or not device-to-device data communication is able to be performed in a selected cell and whether or not there is data of the device-to-device data communication in the terminal apparatus, the terminal apparatus selects information about the device-to-device data communication, which is to be notified to the base station apparatus.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: December 22, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Tsuboi, Katsunari Uemura
  • Patent number: 10849147
    Abstract: A method by a user equipment (UE) is described. The method includes determining a repetition level, determining a initialization value for a scrambling sequence generator based on the repetition level, generating the scrambling sequence, and applying the scrambling sequence for a Physical Downlink Shared Channel (PDSCH). The repetition level is associated with the PDSCH and determined by a Radio Resource Control (RRC) configuration.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 24, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Yamada, Katsunari Uemura, Yasuyuki Kato, Hidekazu Tsuboi
  • Publication number: 20200359438
    Abstract: A terminal device, a base station device, a communication system, a measurement method, and an integrated circuit, which are capable of efficiently performing Sidelink Direct Discovery, are provided. In the terminal device, a reception unit is configured to receive an RRC connection reconfiguration message including a first configuration related to Sidelink Direct Discovery, and in a case where the first configuration includes frequency information, to attempt to acquire configuration information about monitoring of a Sidelink Direct Discovery announcement at a frequency indicated by the frequency information, using a timer configured to count a predetermined time and while the timer is counting, by acquiring system information to be broadcast at the frequency.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: HIDEKAZU TSUBOI, KATSUNARI UEMURA, SHOHEI YAMADA
  • Patent number: 10834734
    Abstract: A wireless communication system in which a first base station apparatus and a second base station apparatus communicate with a terminal apparatus. The first base station apparatus transmits, to the terminal apparatus, data control information related to data transmission and reception of the terminal apparatus and preferential base station apparatus information indicating a priority of data transmission to the base station apparatus, and the terminal apparatus determines any base station apparatus of the first base station apparatus and the second base station apparatus, as a data transmission destination base station apparatus, for data to which bearer split is configured by the data control information, based on at least one of the preferential base station apparatus information and terminal information of the terminal apparatus.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: November 10, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki Kato, Katsunari Uemura, Hidekazu Tsuboi
  • Publication number: 20200351800
    Abstract: There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unit 605 configured to configure, at the base station, for each terminal, a first reference signal configuration for configuring a measurement target for channel state reporting, configured to configure, at the base station, for each terminal, a second reference signal configuration specifying a resource element to be excluded from the target of data demodulation in a case where the terminal demodulates data, and configured to configure, at the base station, for each terminal, a third reference signal configuration for configuring a measurement target for which a reference signal received power is to be measured by the terminal.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 5, 2020
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kimihiko IMAMURA, Wataru OUCHI, Yosuke AKIMOTO, Toshizo NOGAMI, Daiichiro NAKASHIMA, Kazuyuki SHIMEZAWA, Shoichi SUZUKI, Yasuyuki KATO, Katsunari UEMURA
  • Patent number: 10820223
    Abstract: A terminal device, a base station device, a communication method, and an integrated circuit are provided for efficiently performing measurements. A base station device notifies a terminal device of a report configuration including information about an RSSI report, a measurement object indicating at least one frequency assumed as a frequency applicable for an RSSI measurement by the terminal device, and a measurement identifier for linking the report configuration to the measurement object. In a case where the information about the RSSI report is included in a report configuration associated with a measurement identifier, the terminal device assumes at least one frequency indicated by the measurement object associated with the report configuration as the frequency applicable for the RSSI measurement. In a case where at least one frequency to be reported is present, the terminal device reports an RSSI result measured at such an associated frequency, as a measurement result.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: October 27, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Katsunari Uemura, Shohei Yamada, Hidekazu Tsuboi
  • Publication number: 20200337053
    Abstract: A communication system that includes a terminal apparatus and a base station apparatus. The terminal apparatus obtains, from the base station apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. The base station apparatus provides, to the terminal apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Shohei YAMADA, Katsunari UEMURA
  • Publication number: 20200296719
    Abstract: A mobile station apparatus configures first and second timers related to first and second groups. A first group of cells uses a first uplink transmission timing, and a second group of secondary cells uses a second uplink transmission timing. When the first timer of the first group has expired: all transmission HARQ buffers in association with the cells of the first group are flushed, the second timer is considered as expired, and an uplink transmission on any cells except random access preamble transmission on the primary cell is stopped. In a case where the second timer of the second group has expired: all transmission HARQ buffers in association with the secondary cells of the second group are flushed, and an uplink transmission on any cells in the second group except random access preamble transmission on the any cells in the second group is stopped.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Inventors: Yasuyuki KATO, Katsunari UEMURA, Daiichiro NAKASHIMA, Shoichi SUZUKI
  • Patent number: 10779247
    Abstract: There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unit 605 configured to configure, at the base station, for each terminal, a first reference signal configuration for configuring a measurement target for channel state reporting, configured to configure, at the base station, for each terminal, a second reference signal configuration specifying a resource element to be excluded from the target of data demodulation in a case where the terminal demodulates data, and configured to configure, at the base station, for each terminal, a third reference signal configuration for configuring a measurement target for which a reference signal received power is to be measured by the terminal.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kimihiko Imamura, Wataru Ouchi, Yosuke Akimoto, Toshizo Nogami, Daiichiro Nakashima, Kazuyuki Shimezawa, Shoichi Suzuki, Yasuyuki Kato, Katsunari Uemura
  • Patent number: 10772139
    Abstract: A terminal device, a base station device, a communication system, a measurement method, and an integrated circuit, which are capable of efficiently performing Sidelink Direct Discovery, are provided.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: September 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Tsuboi, Katsunari Uemura, Shohei Yamada
  • Patent number: 10764922
    Abstract: A terminal device configured to communicate with a base station device receives random access common information including information on a random access response reception and information on a contention resolution message reception for each repetition level from the base station device, selects a random access preamble corresponding to a repetition level using the random access common information, and selects a contention resolution timer value corresponding to the repetition level selected from the random access common information.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: September 1, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki Kato, Katsunari Uemura, Shohei Yamada, Hidekazu Tsuboi
  • Patent number: 10750554
    Abstract: A terminal device, a base station device, a communication system, a measurement method, and an integrated circuit, which are capable of efficiently performing Sidelink Direct Discovery, are provided. In the terminal device, a reception unit is configured to receive an RRC connection reconfiguration message including a first configuration related to Sidelink Direct Discovery, and in a case where the first configuration includes frequency information, to attempt to acquire configuration information about monitoring of a Sidelink Direct Discovery announcement at a frequency indicated by the frequency information, using a timer configured to count a predetermined time and while the timer is counting, by acquiring system information to be broadcast at the frequency.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: August 18, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Tsuboi, Katsunari Uemura, Shohei Yamada
  • Patent number: 10736104
    Abstract: A communication system that includes a terminal apparatus and a base station apparatus. The terminal apparatus obtains, from the base station apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. The base station apparatus provides, to the terminal apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: August 4, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Yamada, Katsunari Uemura
  • Patent number: 10721659
    Abstract: A measurement object of which a terminal device takes a measurement is selected based on information of whether or not the measurement object included in a measurement configuration message notified by a base station device includes a parameter for a gap configuration or for a cell identification time configuration for small-cell measurement, and receiving power of a cell in which the terminal device itself is present.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: July 21, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidekazu Tsuboi, Katsunari Uemura
  • Publication number: 20200221536
    Abstract: A method by a user equipment (UE) is described. The method includes receiving by the RRC entity of the UE, a PUCCH release request from a lower layer of the UE, and applying the default physical channel configuration for a scheduling request configuration for a concerned secondary cell, upon receiving the PUCCH release request from the lower layers of the UE. The PUCCH release request is notified by a Medium Access Control (MAC) entity of the UE in a case that a time alignment timer expires, the time alignment timer is associated with a secondary timing advance group (sTAG) and the concerned secondary cell belongs to the sTAG.
    Type: Application
    Filed: March 23, 2020
    Publication date: July 9, 2020
    Inventors: Shohei YAMADA, Katsunari UEMURA, Yasuyuki KATO, Hidekazu TSUBOI
  • Patent number: 10674491
    Abstract: A mobile station apparatus configures first and second timers related to first and second groups. A first group of cells uses a first uplink transmission timing, and a second group of secondary cells uses a second uplink transmission timing. When the first timer of the first group has expired: all transmission HARQ buffers in association with the cells of the first group are flushed, the second timer is considered as expired, and an uplink transmission on any cells except random access preamble transmission on the primary cell is stopped. In a case where the second timer of the second group has expired: all transmission HARQ buffers in association with the secondary cells of the second group are flushed, and an uplink transmission on any cells in the second group except random access preamble transmission on the any cells in the second group is stopped.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: June 2, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki Kato, Katsunari Uemura, Daiichiro Nakashima, Shoichi Suzuki
  • Patent number: 10674391
    Abstract: A communication system that includes at least a terminal apparatus and a base station apparatus. The terminal apparatus communicates with a base station apparatus by carrier aggregation using a plurality of serving cells, wherein each serving cell of the plurality of serving cells has a different frequency. The terminal apparatus receives (from the base station apparatus) a measurement configuration which includes a reporting configuration, a measurement object to indicate a measurement frequency and a measurement identity which links the measurement object to the reporting configuration. The terminal apparatus, in a case that an entry condition of the event corresponding with an event identity of the reporting configuration is fulfilled, transmits (to the base station apparatus) a measurement report which includes measurement results of all of the serving cells.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: June 2, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Yamada, Katsunari Uemura, Yasuyuki Kato, Daiichiro Nakashima, Waho Oh
  • Publication number: 20200154472
    Abstract: Disclosed is a radio communication system in which a base station device and a terminal device communicate with each other, and the terminal device performs a random access procedure. The base station device notifies the terminal device of random access common configuration information including the number of repetitions for each level, information indicating a relationship between group information of random access preambles and the level, and the number of attempts of preamble transmission for each level. A MAC layer in the terminal device performs processing of increasing the level in a case that a first counter exceeds the number of attempts of transmission corresponding to the level.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Inventors: Yasuyuki KATO, Shohei YAMADA, Katsunari UEMURA, Hidekazu TSUBOI