Patents by Inventor Hidekazu Tsuboi

Hidekazu Tsuboi 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: 20200205202
    Abstract: There is provided a terminal apparatus to transmit a first random access preamble using a first precoding, monitor a random access response corresponding to the first random access preamble, increment a value of a counter in a case that a reception of the random access response is not successful, and transmit a second random access preamble using a second precoding, if the value of the counter does not reach a predetermined value in a case that the value of the counter is incremented.
    Type: Application
    Filed: July 21, 2017
    Publication date: June 25, 2020
    Inventors: HIROKI TAKAHASHI, SHOHEI YAMADA, HIDEKAZU TSUBOI, TATSUSHI AIBA, KAZUNARI YOKOMAKURA
  • Publication number: 20200195358
    Abstract: A terminal apparatus includes: a higher layer processing unit configured to receive first information and second information; and a receiver configured to receive a block including a first signal, a second signal, a third signal, and a physical broadcast channel, wherein the first information includes information for indicating a periodicity of one or more of the blocks, the second information includes information for indicating time positions of the one or more of the blocks included in a certain time period, a cell ID is detected from the first signal and the second signal, and an index of the block is detected from the third signal.
    Type: Application
    Filed: April 25, 2018
    Publication date: June 18, 2020
    Inventors: Kazunari YOKOMAKURA, Shohei YAMADA, Hidekazu TSUBOI, Hiroki TAKAHASHI
  • Publication number: 20200169906
    Abstract: To provide a technique related to a terminal apparatus (2), a base station apparatus (3), a communication method, and an integrated circuit, which are capable of efficient communication. The terminal apparatus (2) includes a first radio control entity unit and a second radio control entity unit, wherein in a case a first signaling radio bearer (SRB3) is established, the second radio control entity unit submits a second measurement report message to a lower layer of a secondary cell group, and in a case that SRB3 is not established, the second radio control entity unit delivers first data including a second measurement report message to the first radio control entity unit, and the first radio control entity unit generates a first measurement report message including the first data encapsulated and submits the first measurement report message to a lower layer of a master cell group.
    Type: Application
    Filed: July 23, 2018
    Publication date: May 28, 2020
    Inventors: Hidekazu TSUBOI, Shohei YAMADA, Kazunari YOKOMAKURA, Hiroki TAKAHASHI, Takako HORI
  • Publication number: 20200163130
    Abstract: A terminal apparatus for communicating with a base station apparatus receives an RRC connection reconfiguration request message including a Data Radio Bearer (DRB) configuration from the base station apparatus. The DRB configuration includes a DRB identity and an SDAP entity configuration corresponding to the DRB identity. The SDAP entity configuration includes an SDAP header length. An SDAP entity is established in accordance with SDAP configuration information in which the SDAP header length is one or more of integer values of a multiple of eight including zero.
    Type: Application
    Filed: June 15, 2018
    Publication date: May 21, 2020
    Inventors: Takako HORI, Shohei YAMADA, Hidekazu TSUBOI
  • 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
  • Publication number: 20200137800
    Abstract: A terminal apparatus receives a signal including indication information indicating initiation of a random access procedure from a base station apparatus. The terminal apparatus transmits the one or more random access preambles, based on the indication information. The terminal apparatus determines an antenna port to be used for transmission of the one or more random access preambles, based on information of the SRS resource included in the indication information.
    Type: Application
    Filed: June 15, 2018
    Publication date: April 30, 2020
    Inventors: Hiroki TAKAHASHI, Shohei YAMADA, Hidekazu TSUBOI, Kazunari YOKOMAKURA
  • Publication number: 20200127879
    Abstract: A terminal apparatus includes a higher layer processing unit configured to receive first information and second information, and a receiver configured to receive a block and a physical downlink shared channel. The first information includes information for indicating a periodicity of one or more of the blocks. Each of the one or more blocks includes a first synchronization signal, a second synchronization signal, and a physical broadcast channel. The second information includes information for indicating time positions of the one or more blocks included in a certain time period. The physical downlink shared channel is not received in a resource element for a synchronization signal block at a time position of the time positions indicated by the second information.
    Type: Application
    Filed: April 26, 2018
    Publication date: April 23, 2020
    Inventors: Kazunari YOKOMAKURA, Shohei YAMADA, Hidekazu TSUBOI, Hiroki TAKAHASHI
  • Publication number: 20200128586
    Abstract: A terminal apparatus includes: a measurement unit configured to measure a first radio link quality based on at least part of a plurality of reference signals and a second radio link quality based on at least part of the plurality of reference signals in a certain serving cell; and a processing unit configured to trigger a report in a case that the first radio link quality and the second radio link quality satisfy a predetermined condition.
    Type: Application
    Filed: December 6, 2017
    Publication date: April 23, 2020
    Inventors: Hiroki TAKAHASHI, Shohei YAMADA, Hidekazu TSUBOI, Kazunari YOKOMAKURA
  • Patent number: 10631221
    Abstract: Provided is a technology relating to a terminal device, a base station apparatus, a communication system, a communication method, and an integrated circuit, in all of which it is possible that a communication procedure relating to device-to-device communication is efficiently performed.
    Type: Grant
    Filed: July 3, 2015
    Date of Patent: April 21, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Katsunari Uemura, Hidekazu Tsuboi
  • Patent number: 10609760
    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: Grant
    Filed: December 17, 2018
    Date of Patent: March 31, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Yamada, Katsunari Uemura, Yasuyuki Kato, Hidekazu Tsuboi
  • Publication number: 20200092740
    Abstract: A terminal apparatus includes: a receiver configured to receive first information, second information, and third information; and a measuring unit configured to perform measurements. The first information includes information related to the measurements, the second information includes information for indicating a periodicity of one or more blocks, each of the one or more blocks includes a first synchronization signal, a second synchronization signal, and a physical broadcast channel, the third information includes information for indicating time positions of the one or more blocks, the information related to the measurements includes an object on which the measurements are to be performed at a certain carrier frequency, and the measurements are performed based on the periodicity of the one or more blocks.
    Type: Application
    Filed: April 24, 2018
    Publication date: March 19, 2020
    Inventors: Kazunari YOKOMAKURA, Shohei YAMADA, Hidekazu TSUBOI, Hiroki TAKAHASHI
  • Patent number: 10595306
    Abstract: A method by a user equipment (UE) is described. The method includes receiving a RRC message including a first parameter related to a maximum number of scheduling request transmission for a secondary cell, performing a scheduling request procedure based on the first parameter, and transmitting a scheduling request on a Physical Uplink Control Channel (PUCCH) on the secondary cell. The RRC message further includes a second parameter related to a maximum number of scheduling request transmission for a primary cell and the scheduling request procedure is performed further based on the second parameter.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: March 17, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Yamada, Katsunari Uemura, Yasuyuki Kato, Hidekazu Tsuboi
  • Publication number: 20200077312
    Abstract: A terminal apparatus receives a first measurement configuration from a first base station apparatus via a first SRB and receives a second measurement configuration from a second base station apparatus via a second SRB, and transmits via the first SRB a first measurement result for the first measurement configuration configured from the first base station apparatus via the first SRB and transmits via the second SRB a second measurement result for the second measurement configuration configured from the second base station apparatus via the second SRB.
    Type: Application
    Filed: March 20, 2018
    Publication date: March 5, 2020
    Inventors: Hidekazu TSUBOI, Shohei YAMADA, Kazunari YOKOMAKURA, Hiroki TAKAHASHI
  • Publication number: 20200077288
    Abstract: A terminal apparatus configured to receive a measurement configuration from one or more base station apparatuses transmits a first measurement result and a second measurement result, and the first measurement result includes, as measurement results of a serving cell, the measurement results of the serving cell of a first cell group and the serving cell of a second cell group, and the second measurement result includes, as a measurement result of a serving cell, the measurement result of the serving cell of the second cell group.
    Type: Application
    Filed: March 20, 2018
    Publication date: March 5, 2020
    Inventors: Hidekazu TSUBOI, Shohei YAMADA, Kazunari YOKOMAKURA, Hiroki TAKAHASHI
  • Publication number: 20200076556
    Abstract: A terminal apparatus includes a monitor unit configured to monitor qualities of a plurality of links, each being associated with at least one reference signal, a controller configured to send an indication to a higher layer in a case that qualities of a prescribed number of links among the qualities of the plurality of links are worse than a threshold, and a higher layer processing unit configured to perform a recovery request to a base station apparatus in a case of receiving a prescribed number of the indications, and end the recovery request in a case of receiving a prescribed physical downlink control channel.
    Type: Application
    Filed: March 23, 2018
    Publication date: March 5, 2020
    Inventors: Hiroki TAKAHASHI, Shohei YAMADA, Hidekazu TSUBOI, Kazunari YOKOMAKURA
  • Patent number: 10575323
    Abstract: A method by a user equipment (UE) is described. The method includes receiving, an evolved Node B (eNB) a RRC message including a parameter related to a SR periodicity for a secondary cell and a parameter related to a SR prohibit timer; and setting the SR prohibit timer based on the SR periodicity for the secondary cell. Setting the SR prohibit timer may be further based on the SR periodicity for the primary cell.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shohei Yamada, Katsunari Uemura, Yasuyuki Kato, Hidekazu Tsuboi
  • Publication number: 20200052867
    Abstract: A terminal apparatus includes a receiver receiving first system information broadcasted using a first subcarrier spacing, acquiring information of a second subcarrier spacing included in the first system information, receiving second system information broadcasted using the second subcarrier spacing, acquiring a parameter included in the second system information and needed for random access processing, and acquiring information of an uplink subcarrier spacing included in the second system information, and a transmitter transmitting a random access preamble based on the parameter needed for the random access processing.
    Type: Application
    Filed: September 6, 2017
    Publication date: February 13, 2020
    Inventors: Hidekazu TSUBOI, Shohei YAMADA, Kazunari YOKOMAKURA, Hiroki TAKAHASHI
  • Publication number: 20200037365
    Abstract: A terminal apparatus transmits one random access preamble in multiple time sections, and changes a transmit beam to be used to transmit the one random access preamble in one of the multiple time sections or each of the multiple time sections, and monitors a random access response to the one random access preamble. The random access response includes first information for identifying any one of the multiple time sections.
    Type: Application
    Filed: August 15, 2017
    Publication date: January 30, 2020
    Inventors: HIROKI TAKAHASHI, SHOHEI YAMADA, HIDEKAZU TSUBOI, KAZUNARI YOKOMAKURA
  • Publication number: 20200037273
    Abstract: To provide a terminal apparatus including a receiver configured to receive, in a time resource including a plurality of OFDM symbol groups, a synchronization signal included in each of the plurality of OFDM symbol groups, a synchronization unit configured to determine a position of a first synchronization signal that is one of the synchronization signals, and a detection unit configured to receive, based on the first synchronization signal, a physical broadcast channel. The time resource is periodically allocated, and a maximum number of the plurality of OFDM symbol groups in which the synchronization signal included in the time resource is possibly transmitted is predefined.
    Type: Application
    Filed: August 31, 2017
    Publication date: January 30, 2020
    Applicants: Sharp Kabushiki Kaisha, FU Innovation Company Limited
    Inventors: Kazunari YOKOMAKURA, Shohei YAMADA, Hidekazu TSUBOI, Hiroki TAKAHASHI
  • Publication number: 20200029235
    Abstract: Provided is a terminal apparatus including: a reception unit configured to: receive first information including at least one first setting, receive second information including at least one second setting, receive third information including at least one third setting, and receive fourth information; a channel state measurement unit configured to measure channel state information; and a transmission unit configured to report the channel state information based on interference that is measured. In the terminal apparatus, the at least one first setting comprises a plurality of first settings for at least one report of the channel state information. Each of the plurality of first settings includes one first index. The at least one second setting comprises a plurality of second settings concerning at least one reference signal for measuring the interference. Each of the plurality of second settings includes one second index.
    Type: Application
    Filed: December 5, 2017
    Publication date: January 23, 2020
    Inventors: Kazunari YOKOMAKURA, Shohei YAMADA, Hidekazu TSUBOI, Hiroki TAKAHASHI