Patents by Inventor Masayuki Nakazawa

Masayuki Nakazawa 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: 12004073
    Abstract: A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: June 4, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Miho Maeda, Mitsuru Mochizuki, Taiga Saegusa, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Patent number: 11997557
    Abstract: When being connected to a macro cell (S-MeNB) and a small cell (SeNB), a user equipment device performs a pre-handover process of disconnecting the connection with the SeNB before a handover process of switching a macro cell connected with the UE from the macro cell (S-MeNB) that is a moving source to a macro cell (T-MeNB) that is a moving destination along with moving of the UE, and after the handover process, performs a post-handover process of reestablishing the connection with the SeNB.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: May 28, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Ohara, Taisei Suemitsu, Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Daisuke Hiramatsu
  • Patent number: 11997648
    Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 28, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masayuki Nakazawa, Mitsuru Mochizuki, Hideo Umehara, Kuniyuki Suzuki
  • Publication number: 20240148895
    Abstract: An antibody-drug conjugate represented by formula (I): (where Ab is an antibody, X is a group represented by formula (X-1), formula (X-2) or formula (X-3): (where at the left represents the binding site with NH and at the right represents the binding side with D), D is a group represented by formula (D-1) or formula (D-2): (where represents the binding site with X), and n is in the range of about 1 to about 8).
    Type: Application
    Filed: August 24, 2023
    Publication date: May 9, 2024
    Inventors: Masayuki MIYANO, Yuya NAKAZAWA, Kentaro ISO, Yuki YABE, Hirotatsu UMIHARA, Junichi TAGUCHI, Satoshi INOUE, Shuntaro TSUKAMOTO, Hiroyuki KOGAI, Atsumi YAMAGUCHI, Tsuyoshi AKAGI, Yohei MUKAI, Toshifumi HIRAYAMA, Masaki KATO, Toshiki MOCHIZUKI, Akihiko YAMAMOTO, Yuji YAMAMOTO, Takato SAKURADA
  • Publication number: 20240105734
    Abstract: The stability of a step of processing a wiring formed using copper, aluminum, gold, silver, molybdenum, or the like is increased. Moreover, the concentration of impurities in a semiconductor film is reduced. Moreover, the electrical characteristics of a semiconductor device are improved. In a transistor including an oxide semiconductor film, an oxide film in contact with the oxide semiconductor film, and a pair of conductive films being in contact with the oxide film and including copper, aluminum, gold, silver, molybdenum, or the like, the oxide film has a plurality of crystal parts and has c-axis alignment in the crystal parts, and the c-axes are aligned in a direction parallel to a normal vector of a top surface of the oxide semiconductor film or the oxide film.
    Type: Application
    Filed: December 7, 2023
    Publication date: March 28, 2024
    Inventors: Shunpei YAMAZAKI, Junichi KOEZUKA, Yasutaka NAKAZAWA, Yukinori SHIMA, Masami JINTYOU, Masayuki SAKAKURA, Motoki NAKASHIMA
  • Publication number: 20240073787
    Abstract: A closed subscriber group (CSG) cell allows use of subscribers. To receive the service by the CSG cell, a CSG-ID is notified to a user equipment, but cannot be obtained outside the reach of radio waves from a non-CSG cell. Base stations respectively provided to a CSG cell and a non-CSG cell, and access is made to the CSG cell with the use of a CSG-ID issued when use of the CSG cell is allowed, the base station refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network. The core network determines whether the user equipment is allowed to use the CSG cell and, if allowed, transmits a signal for assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the CSG-ID.
    Type: Application
    Filed: November 9, 2023
    Publication date: February 29, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miho MAEDA, Mitsuru MOCHIZUKI, Taiga SAEGUSA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
  • Publication number: 20230354250
    Abstract: A communication system includes a base station and a communication terminal connected to the base station. The base station transmits a result of reception of an uplink positioning signal transmitted by the communication terminal and location information of the base station to a positioning device that is a device having a positioning function of deriving a location of the communication terminal, and the communication terminal transmits a result of reception of a downlink positioning signal transmitted by the base station to the positioning device.
    Type: Application
    Filed: October 11, 2021
    Publication date: November 2, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Naofumi IWAYAMA
  • Publication number: 20230344528
    Abstract: A signal is transmitted and received between a base station device and a communication terminal device that are included in a communication system, through a multi-element antenna including a plurality of antenna elements. At least one of the base station device and the communication terminal device includes a PHY processing unit that is a calibration unit that performs calibration of phases and amplitudes of beams formed by the antenna elements when the signal is transmitted and received. The PHY processing unit obtains a correction value for the phases and the amplitudes of the beams in the respective antenna elements so that the phases and the amplitudes of the beams are identical among the antenna elements, and performs the calibration based on the obtained correction value.
    Type: Application
    Filed: June 27, 2023
    Publication date: October 26, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hideki MORISHIGE, Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Yoshitaka HARA, Kuniyuki SUZUKI
  • Publication number: 20230300796
    Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
    Type: Application
    Filed: April 20, 2023
    Publication date: September 21, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Hideo UMEHARA, Kuniyuki SUZUKI
  • Publication number: 20230199903
    Abstract: A narrow-bandwidth terminal device performs radio communication at a bandwidth narrower than a system bandwidth. The narrow-bandwidth terminal device in an idle state camps on a cell, and performs discontinuous reception of a signal transmitted from the cell. The terminal device also determines a reception condition of the signal, for example, whether the signal can be received. When it is determined that the signal cannot be received, the narrow-bandwidth terminal device moves out of a coverage area of the cell while continuing to perform the discontinuous reception. When it is determined that a discontinuous reception timer has been completed, the narrow-bandwidth terminal device continues to perform the discontinuous reception.
    Type: Application
    Filed: September 7, 2022
    Publication date: June 22, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Kuniyuki SUZUKI, Masayuki NAKAZAWA, Noriyuki FUKUI, Haruka NOZAWA
  • Publication number: 20230199821
    Abstract: A mobile communication system capable of easily notifying the interference-related information and avoiding interference in a situation in which a macro cell and local nodes are deployed to coexist. In the system, a macro cell (eNB) notifies, via user equipments (UEs) present in a coverage, HeNBs present in the coverage of the interference-related information related to the interference to a physical resource to be used, for example, a high interference indication (HII) and an overload indicator (OI).
    Type: Application
    Filed: February 21, 2023
    Publication date: June 22, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Miho MAEDA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
  • Publication number: 20230142356
    Abstract: A base station device is configured to set, for each communication terminal device, a radio format for signals transmitted to and received from the communication terminal device. The radio format is set for each communication terminal device in accordance with, for example, a type of use including a moving speed of the communication terminal device. The base station device may be configured to change the radio format for the communication terminal device based on the information about a change in the environment of a radio communication between the communication terminal device and the base station device and a change including the communication terminal device's location. The signals transmitted and received between the base station device and the communication terminal device include radio formats in which at least one of a length of a symbol of the signal and a length of a cyclic prefix in an OFDM scheme differs.
    Type: Application
    Filed: January 11, 2023
    Publication date: May 11, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masayuki NAKAZAWA, Kuniyuki SUZUKI, Mitsuru MOCHIZUKI, Koji ONO, Takayuki NONAMI, Naohito TOMOE, Fumiki HASEGAWA
  • Publication number: 20230088622
    Abstract: A communication system includes a communication terminal, and a plurality of networks configured to perform radio communication with the communication terminal. A priority of at least one of a paging timing and a paging type is assigned to a paging to be transmitted from each of the plurality of networks. The communication terminal selects a corresponding one of the pagings to be received, based on the priority.
    Type: Application
    Filed: February 8, 2021
    Publication date: March 23, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Akinori TAIRA, Fumihiro HASEGAWA
  • Publication number: 20220386333
    Abstract: In the SL communication, the QoS required for each service is maintained, and the reliability of the service is enhanced. A communication system includes a base station, and a plurality of communication terminals configured to perform communication with the base station and perform Device-to-Device communication. A first communication terminal transmits, to a third communication terminal, a scheduling request for performing the Device-to-Device communication with a second communication terminal. The third communication terminal transmits, to the base station, the scheduling request received from the first communication terminal. In response to the scheduling request received from the third communication terminal, the base station generates scheduling information on the Device-to-Device communication between the first communication terminal and the second communication terminal, and transmits the scheduling information to the third communication terminal.
    Type: Application
    Filed: November 20, 2020
    Publication date: December 1, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Tadahiro SHIMODA, Naofumi IWAYAMA, Fumiki HASEGAWA, Masayuki NAKAZAWA
  • Publication number: 20220353770
    Abstract: When being connected to a macro cell (S-MeNB) and a small cell (SeNB), a user equipment device performs a pre-handover process of disconnecting the connection with the SeNB before a handover process of switching a macro cell connected with the UE from the macro cell (S-MeNB) that is a moving source to a macro cell (T-MeNB) that is a moving destination along with moving of the UE, and after the handover process, performs a post-handover process of reestablishing the connection with the SeNB.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 3, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuya OHARA, Taisei Suemitsu, Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Daisuke Hiramatsu
  • Publication number: 20220311553
    Abstract: Provided is a communication system capable of suppressing decrease in a transmission rate. An eNB communicates with a UE using a self-contained subframe. The self-contained subframe includes a downlink signal to be transmitted from the eNB to the UE, and an uplink signal to be transmitted from the UE to the eNB in response to the downlink signal. The uplink signal has a structure including an uplink control signal indicating information for controlling transmission of the uplink signal, and uplink user data to be transmitted before and after the uplink control signal. The eNB notifies the UE of a structure of the uplink signal. The eNB may predetermine scheduling for retransmission to retransmit the downlink signal, before performing initial transmission of the downlink signal.
    Type: Application
    Filed: June 13, 2022
    Publication date: September 29, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Fumihiro HASEGAWA
  • Publication number: 20220287003
    Abstract: A technology that enables prompt NW connection is provided. A communication system includes: a communication terminal; and a plurality of networks configured to perform radio communication with the communication terminal. The communication terminal determines whether or not there is paging causing collision among a plurality of pagings respectively transmitted to the communication terminal from the plurality of networks. When the communication terminal detects the collision of the paging, the communication terminal notifies at least one of the plurality of networks that transmits the paging causing the collision of the paging about the collision of the paging.
    Type: Application
    Filed: August 27, 2020
    Publication date: September 8, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadahiro SHIMODA, Mitsuru MOCHIZUKI, Masayuki NAKAZAWA, Naofumi IWAYAMA
  • Publication number: 20220256442
    Abstract: A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 11, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miho MAEDA, Mitsuru MOCHIZUKI, Taiga SAEGUSA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
  • Publication number: 20220248371
    Abstract: In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
    Type: Application
    Filed: April 19, 2022
    Publication date: August 4, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masayuki NAKAZAWA, Mitsuru MOCHIZUKI, Hideo UMEHARA, Kuniyuki SUZUKI
  • Patent number: 11350345
    Abstract: A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 31, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miho Maeda, Mitsuru Mochizuki, Taiga Saegusa, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu