Patents by Inventor Kenji KAI

Kenji KAI 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).

  • Patent number: 12177699
    Abstract: A terminal that communicates simultaneously with a first communication node and a second communication node includes a detection unit that detects a failure in communication with the second communication node; and a transmitting unit that transmits notification including failure information and positional information to the first communication node, the failure information concerning a failure in communication with the second communication node and the positional information being obtained at the time when the failure was detected. In another aspect a communication node is also disclosed.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: December 24, 2024
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Tianyang Min, Kenji Kai
  • Publication number: 20240319232
    Abstract: A current sensor may include a first support portion and a first lead frame which is made of a material different from that of the first support portion. The current sensor may include: a signal processing IC which has a first surface supported by a first surface of the first support portion and is electrically connected to the first lead frame; at least one magnetoelectric conversion element which is configured separately from the signal processing IC, is mounted on a second surface on a side opposite to the first surface of the signal processing IC, and outputs, to the signal processing IC, a signal processed by the signal processing IC; and a second lead frame which has a second terminal portion, at least a part of which is arranged to face the second surface of the signal processing IC, and through which a measurement current flows.
    Type: Application
    Filed: March 21, 2024
    Publication date: September 26, 2024
    Inventors: Masaki TSUJIMOTO, Kenji KAI, Kenji SUZUKI
  • Publication number: 20240255589
    Abstract: A magnetic sensor comprises a die pad, a first and second magnetoelectric conversion units, and a signal processing unit which processes signals output from the first and second magnetoelectric conversion unit. The die pad includes a first frame portion including a fifth and sixth frame portions, a second frame portion including a seventh and eighth frame portions, a third frame portion, a fourth frame portion, and a coupling portion. At least one of the third, fifth, or seventh frame portions has a first gap which reaches to a first space portion surrounded by the coupling portion, and the third, fifth, and seventh frame portions from an outer edge, and at least one of the fourth, sixth, or eighth frame portions has a second gap which reaches to a second space portion surrounded by the coupling portion, and the fourth, sixth, and eighth frame portions from an outer edge.
    Type: Application
    Filed: January 25, 2024
    Publication date: August 1, 2024
    Inventors: Ken TANAKA, Kenji KAI, Masaki YUZAWA
  • Patent number: 11647381
    Abstract: CN (200) acquires from UE (50) UE Capability ID of UE Capability that indicates capability of the UE (50), and manages the UE Capability and the UE Capability ID by associating them with each other. The CN (200) transmits to gNB (100) Initial Context Setup Request as an instruction to acquire the UE Capability based on the acquired UE Capability ID and the UE Capability managed by the CN (200).
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: May 9, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Hideaki Takahashi, Anil Umesh, Kenji Kai
  • Patent number: 11627634
    Abstract: When RRC connection release in a radio resource control layer reaches UE (200A), gNB-DU (110) transmits UE CONTEXT RELEASE COMPLETE of the UE (200A) to gNB-CU (120). The gNB-CU (120) releases a context allocated to the UE (200A) based on the UE CONTEXT RELEASE COMPLETE.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: April 11, 2023
    Assignee: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Tooru Uchino, Kenji Kai
  • Publication number: 20230094395
    Abstract: A die pad, a signal processing IC, an adhesive layer, and at least one magnetoelectric conversion element included in a magnetic sensor are encapsulated by a molding resin. At least a part of the first end surface of the signal processing IC is positioned on a side closer to the at least one magnetoelectric conversion element than a first end surface of the die pad on a side of the at least one magnetoelectric conversion element in a plan view. An isolation portion into which the molding resin enters is provided between the first surface of the die pad on a side of the first end surface, and the first surface of the signal processing IC on a side of the first end surface, and a thickness of the isolation portion is smaller than a thickness of the die pad.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Inventors: Ken TANAKA, Kenji KAI, Takuya ISHIDA
  • Patent number: 11516081
    Abstract: A communication device is disclosed including a communication unit configured to receive a message including an SCG configuration, wherein the communication unit transmits a message, which does not include the SCG configuration, to another communication device and causes the another communication device to perform full configuration. In other aspects, another communication device and a communication method are also disclosed.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: November 29, 2022
    Assignee: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Kenji Kai
  • Publication number: 20220303923
    Abstract: A terminal (100) is connected to an NR network that communicates with TSN. The terminal (100) includes a transmitting unit (101) that transmits to the NR network in which NR time is used, a message for requesting for delivery of TSN time used in the TSN, and a receiving unit (103) that receives the TSN time from the NR network by using Dedicated Signaling.
    Type: Application
    Filed: July 30, 2019
    Publication date: September 22, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Kenji Kai, Tianyang Min
  • Publication number: 20220286879
    Abstract: A terminal that communicates simultaneously with a first communication node and a second communication node includes a detection unit that detects a failure in communication with the second communication node; and a transmitting unit that transmits notification including failure information and positional information to the first communication node, the failure information concerning a failure in communication with the second communication node and the positional information being obtained at the time when the failure was detected. In another aspect a communication node is also disclosed.
    Type: Application
    Filed: July 31, 2019
    Publication date: September 8, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Tianyang Min, Kenji Kai
  • Publication number: 20220272554
    Abstract: A terminal that communicates simultaneously with a first communication node and a second communication node includes: a detection unit that detects a failure in communication with the second communication node; and a transmitting unit that transmits failure information to the first communication node, the failure information concerning a failure in communication with the second communication node. A communication node that, together with a second communication node, communicates with a terminal includes: a control unit that performs a trace to collect failure information from the terminal; a receiving unit that receives failure information from the second communication node, the failure information concerning a failure in communication between the terminal and the communication node itself; and a transmitting unit that transmits the failure information to a trace collection entity when the communication node is performing a trace.
    Type: Application
    Filed: July 31, 2019
    Publication date: August 25, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Tianyang Min, Kenji Kai
  • Patent number: 11360122
    Abstract: Provided is a current sensor for reducing heat generation caused by energization. The current sensor is provided, including: primary terminals; a first magnetic sensor; a primary conductor; and a signal processing IC; wherein the primary conductor has a bend section including: a first region that surrounds at least a part of the first magnetic sensor in planar view and at least a part of which does not face the signal processing IC; and a second region that faces the signal processing IC; wherein the height of the first region is lower than that of the primary terminal, the height of the second region is lower than that of the first region, and the first magnetic sensor is connected to the signal processing IC through conductive wires, on the opposite side from the plane.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: June 14, 2022
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Kenji Suzuki, Kenji Kai
  • Publication number: 20220159509
    Abstract: A radio base station determines an allocation number of header compression sessions capable of being configured by each of a radio base station and another radio base station on which a user equipment performs dual connectivity, based on a maximum number of header compression sessions capable of being configured by the user equipment, and transmits allocation information indicating the allocation number to the other radio base station. In other aspects, a user equipment and a radio communication system are also disclosed.
    Type: Application
    Filed: March 28, 2019
    Publication date: May 19, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Hideaki Takahashi, Kenji Kai
  • Publication number: 20220124708
    Abstract: A gNB (200) includes a receiving unit (203) that receives a plurality of TSN times (T1, T2, and T3); a control unit (205) that associates a time identifier (TSN1, TSN2, and TSN3) with each of the plurality of TSN times (T1, T2, and T3); and a transmitting unit (201) that transmits the plurality of TSN times (T1, T2, and T3) and the time identifier (TSN1, TSN2, and TSN3) associated with each of the plurality of TSN times (T1, T2, and T3) to a UE (100). Each TSN time (T1, T2, and T3) is a time reference in the TSN (20a, 20b, and 20c).
    Type: Application
    Filed: February 22, 2019
    Publication date: April 21, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Tianyang Min, Kenji Kai, Teruaki Toeda
  • Publication number: 20220124557
    Abstract: A network node includes a receiving unit that receives a message of a higher layer from a user equipment, a control unit that determines a higher network node to which the message of the higher layer is to be transmitted from a plurality of higher network nodes that terminate and split a higher layer, and a transmitting unit that transmits the message of the higher layer to the determined higher network node.
    Type: Application
    Filed: February 14, 2019
    Publication date: April 21, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Kenji Kai
  • Publication number: 20220110171
    Abstract: A network node includes a receiving unit that receives information related to a protocol version of a message of a higher layer and a control unit that uses a same protocol version for a plurality of higher network nodes that terminate and split the higher layer, based on the information related to the protocol version, in which the network node is one of the plurality of higher network nodes.
    Type: Application
    Filed: February 14, 2019
    Publication date: April 7, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Kenji Kai
  • Publication number: 20220078868
    Abstract: A network node includes a receiving unit that receives information indicating whether or not predetermined information is to be transmitted to a lower network node and a transmitting unit that transmits the predetermined information to the lower network node based on the information indicating whether or not the predetermined information is to be transmitted to the lower network node, in which the network node is one of a plurality of higher network nodes that terminate and split a higher layer.
    Type: Application
    Filed: February 14, 2019
    Publication date: March 10, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Kenji Kai
  • Patent number: 11190931
    Abstract: A master node is disclosed including a controller that determines a number regarding a measurement capability of a terminal in a second radio access scheme, wherein the terminal communicates with a secondary node of the second radio access scheme together with the master node of a first radio access scheme; a transmitter that transmits the number regarding the measurement capability of the terminal in the second radio access scheme to the secondary node; and a receiver that receives from the secondary node a response indicating that the secondary node admits the number regarding the measurement capability of the terminal, wherein the controller controls a measurement operation performed by the terminal based on the response. In other aspects, a measurement operation control method and a secondary node are also disclosed.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: November 30, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Hideaki Takahashi, Kenji Kai, Ryusuke Matsukawa, Tianyang Min
  • Publication number: 20210298116
    Abstract: When RRC connection release in a radio resource control layer reaches UE (200A), gNB-DU (110) transmits UE CONTEXT RELEASE COMPLETE of the UE (200A) to gNB-CU (120). The gNB-CU (120) releases a context allocated to the UE (200A) based on the UE CONTEXT RELEASE COMPLETE.
    Type: Application
    Filed: August 8, 2018
    Publication date: September 23, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Tooru Uchino, Kenji Kai
  • Publication number: 20210258214
    Abstract: A network node is a first network node of a communication system including a user device and a plurality of network nodes, the network node including a reception unit that receives an inter-node message relating to a configuration of the user device from a second network node; a determination unit that determines whether a manner of updating the configuration of the user device is a full configuration or a delta configuration based on the inter-node message; and an updating unit that updates the configuration of the user device with the full configuration or the delta configuration based on the determination.
    Type: Application
    Filed: June 21, 2018
    Publication date: August 19, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Kenji Kai
  • Publication number: 20210258218
    Abstract: A communication device is disclosed including a communication unit configured to receive a message including an SCG configuration, wherein the communication unit transmits a message, which does not include the SCG configuration, to another communication device and causes the another communication device to perform full configuration. In other aspects, another communication device and a communication method are also disclosed.
    Type: Application
    Filed: June 21, 2018
    Publication date: August 19, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Teruaki Toeda, Kenji Kai