Patents by Inventor Taisei Suemitsu

Taisei Suemitsu 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: 20220361166
    Abstract: A mobile communication system capable of reducing energy consumption of a network node in a local area range. When judging that there is a shift trigger, a local eNB shifts from a normal operation to an energy saving operation. In the energy saving operation, the local eNB stops the operation of transmitting at least a part of downlink transmission signals to be transmitted to a user equipment (UE) and performs the operation of receiving an uplink transmission signal transmitted from the UE. When judging that it has received the uplink transmission signal (RACH) in the energy saving operation, the local eNB shifts to the normal operation.
    Type: Application
    Filed: July 22, 2022
    Publication date: November 10, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miho MAEDA, Mitsuru MOCHIZUKI, Yasushi IWANE, Yuji KAKEHI, Hitoshi KIMURA, Taisei SUEMITSU
  • 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: 20220279476
    Abstract: The present invention has an object to provide a communication system capable of avoiding congestion in downlink communication or uplink communication and a shortage of radio resources arising therefrom. In the present invention, in a communication system including a normal user equipment (normal UE) that performs human to human communication and a machine type communication device (MTCD) that performs machine to machine communication, a base station device transmits a paging message to the normal UE and the MTCD for calling the normal UE and the MTCD. The paging message contains, for example, an equipment identity (UE-ID). A maximum number of equipment identities (UE-IDs) that can be accommodated within this paging message is set individually for the normal UE and the MTCD. Alternatively, the paging message contains a calling indicator in place of the equipment identity of the MTCD (UE-ID of MTCD).
    Type: Application
    Filed: May 23, 2022
    Publication date: September 1, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Miho MAEDA, Yasushi IWANE, Takayuki NONAMI, Taisei SUEMITSU, Yuichi NAKAI
  • 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
  • Patent number: 11405897
    Abstract: A mobile communication system capable of reducing energy consumption of a network node in a local area range. When judging that there is a shift trigger, a local eNB shifts from a normal operation to an energy saving operation. In the energy saving operation, the local eNB stops the operation of transmitting at least a part of downlink transmission signals to be transmitted to a user equipment (UE) and performs the operation of receiving an uplink transmission signal transmitted from the UE. When judging that it has received the uplink transmission signal (RACH) in the energy saving operation, the local eNB shifts to the normal operation.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: August 2, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miho Maeda, Mitsuru Mochizuki, Yasushi Iwane, Yuji Kakehi, Hitoshi Kimura, Taisei Suemitsu
  • Patent number: 11363560
    Abstract: The present invention has an object to provide a communication system capable of avoiding congestion in downlink communication or uplink communication and a shortage of radio resources arising therefrom. In the present invention, in a communication system including a normal user equipment (normal UE) that performs human to human communication and a machine type communication device (MTCD) that performs machine to machine communication, a base station device transmits a paging message to the normal UE and the MTCD for calling the normal UE and the MTCD. The paging message contains, for example, an equipment identity (UE-ID). A maximum number of equipment identities (UE-IDs) that can be accommodated within this paging message is set individually for the normal UE and the MTCD. Alternatively, the paging message contains a calling indicator in place of the equipment identity of the MTCD (UE-ID of MTCD).
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: June 14, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuru Mochizuki, Miho Maeda, Yasushi Iwane, Takayuki Nonami, Taisei Suemitsu, Yuichi Nakai
  • 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
  • Publication number: 20220046590
    Abstract: A communication system in which when judging to have received an RRC message from a communication terminal device, a base station device, for example, HeNB checks an MTCD indicator to be mapped to the received RRC message. Then, when judging that the UE that has transmitted the RRC message received is an MTCD being a device for machine type communication (MTC) from the checked MTCD indicator, the HeNB performs a concentration process on the data from the MTCD to the core network.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miho MAEDA, Mitsuru MOCHIZUKI, Yasushi IWANE, Takayuki NONAMI, Taisei SUEMITSU, Yuichi NAKAI
  • Publication number: 20210168624
    Abstract: A communication system of the present disclosure includes a user equipment and a base station, in which a protocol stack between the user equipment and the base station includes PDCP, RLC, MAC and PHY. The base station includes a first node and one or more second nodes, the first node terminates the PDCP, each of the second nodes terminates the RLC, the MAC and the PHY. The base station is configured to perform radio communication with the user equipment that terminates the PDCP, the RLC, the MAC and the PHY.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fusako TAKAYANAGI, Etsuko HOKAN, Taisei SUEMITSU, Miho MAEDA, Mitsuru MOCHIZUKI, Takayuki NONAMI
  • Publication number: 20210120486
    Abstract: A communication system includes a base station configuring an energy saving cell (ES cell) and a base station configuring a compensation cell (Comp cell). The ES cell is switchable between a switch-on state and a switch-off state. The Comp cell compensates for the coverage of the ES cell when the ES cell is in the switch-off state. Before the Comp cell starts compensating for the coverage, for example, before the ES cell decides to switch itself off in Step ST2101, in Step ST2201 for example, the base station configuring the ES cell notifies the UE being connected with the ES cell of the information about a Comp cell, for example, a Comp cell list.
    Type: Application
    Filed: December 7, 2020
    Publication date: April 22, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasuhiro ONAKA, Miho MAEDA, Mitsuru MOCHIZUKI, Taisei SUEMITSU, Noriyuki FUKUI
  • Patent number: 10893471
    Abstract: A communication system includes a base station configuring an energy saving cell (ES cell) and a base station configuring a compensation cell (Comp cell). The ES cell is switchable between a switch-on state and a switch-off state. The Comp cell compensates for the coverage of the ES cell when the ES cell is in the switch-off state. Before the Comp cell starts compensating for the coverage, for example, before the ES cell decides to switch itself off in Step ST2101, in Step ST2201 for example, the base station configuring the ES cell notifies the UE being connected with the ES cell of the information about a Comp cell, for example, a Comp cell list.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: January 12, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasuhiro Onaka, Miho Maeda, Mitsuru Mochizuki, Taisei Suemitsu, Noriyuki Fukui
  • Publication number: 20200314715
    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: June 17, 2020
    Publication date: October 1, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takuya OHARA, Taisei Suemitsu, Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Daisuke Hiramatsu
  • Patent number: 10743227
    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: March 16, 2015
    Date of Patent: August 11, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Ohara, Taisei Suemitsu, Mitsuru Mochizuki, Kuniyuki Suzuki, Masayuki Nakazawa, Daisuke Hiramatsu
  • Publication number: 20200120633
    Abstract: The present invention has an object to provide a communication system capable of avoiding congestion in downlink communication or uplink communication and a shortage of radio resources arising therefrom. In the present invention, in a communication system including a normal user equipment (normal UE) that performs human to human communication and a machine type communication device (MTCD) that performs machine to machine communication, a base station device transmits a paging message to the normal UE and the MTCD for calling the normal UE and the MTCD. The paging message contains, for example, an equipment identity (UE-ID). A maximum number of equipment identities (UE-IDs) that can be accommodated within this paging message is set individually for the normal UE and the MTCD. Alternatively, the paging message contains a calling indicator in place of the equipment identity of the MTCD (UE-ID of MTCD).
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Miho MAEDA, Yasushi IWANE, Takayuki NONAMI, Taisei SUEMITSU, Yuichi NAKAI
  • Publication number: 20190306791
    Abstract: A communication system includes a base station configuring an energy saving cell (ES cell) and a base station configuring a compensation cell (Comp cell). The ES cell is switchable between a switch-on state and a switch-off state. The Comp cell compensates for the coverage of the ES cell when the ES cell is in the switch-off state. Before the Comp cell starts compensating for the coverage, for example, before the ES cell decides to switch itself off in Step ST2101, in Step ST2201 for example, the base station configuring the ES cell notifies the UE being connected with the ES cell of the information about a Comp cell, for example, a Comp cell list.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 3, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasuhiro ONAKA, Miho MAEDA, Mitsuru MOCHIZUKI, Taisei SUEMITSU, Noriyuki FUKUI
  • Publication number: 20190254000
    Abstract: The present invention has an object to provide a communication system capable of avoiding congestion in downlink communication or uplink communication and a shortage of radio resources arising therefrom. In the present invention, in a communication system including a normal user equipment (normal UE) that performs human to human communication and a machine type communication device (MTCD) that performs machine to machine communication, a base station device transmits a paging message to the normal UE and the MTCD for calling the normal UE and the MTCD. The paging message contains, for example, an equipment identity (UE-ID). A maximum number of equipment identities (UE-IDs) that can be accommodated within this paging message is set individually for the normal UE and the MTCD. Alternatively, the paging message contains a calling indicator in place of the equipment identity of the MTCD (UE-ID of MTCD).
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru Mochizuki, Miho Maeda, Yasushi Iwane, Takayuki Nonami, Taisei Suemitsu, Yuichi Nakai
  • Patent number: 10383051
    Abstract: A communication system includes a base station configuring an energy saving cell (ES cell) and a base station configuring a compensation cell (Comp cell). The ES cell is switchable between a switch-on state and a switch-off state. The Comp cell compensates for the coverage of the ES cell when the ES cell is in the switch-off state. Before the Comp cell starts compensating for the coverage, for example, before the ES cell decides to switch itself off in Step ST2101, in Step ST2201 for example, the base station configuring the ES cell notifies the UE being connected with the ES cell of the information about a Comp cell, for example, a Comp cell list.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: August 13, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuhiro Onaka, Miho Maeda, Mitsuru Mochizuki, Taisei Suemitsu, Noriyuki Fukui
  • Publication number: 20190075472
    Abstract: A communication system of the present invention includes a user equipment (UE), and a plurality of cells that perform communication with the UE. The plurality of cells include a macro cell having a relatively-wide-range coverage, and a plurality of small cells having a relatively-narrow-range coverage. The plurality of small cells are connected to a concentrator. The concentrator selects the small cell to which the UE is to be connected, from among a plurality of small cells, based on the flow of at least either one of the received data that each small cell receives from the UE and the transmission data that each small cell transmits to an MME and an S-GW.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 7, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Fusako TAKAYANAGI, Etsuko HOKAN, Taisei SUEMITSU, Miho MAEDA, Mitsuru MOCHIZUKI, Takayuki NONAMI
  • Patent number: 10165482
    Abstract: A mobile communication system includes a CSG cell which is accessible by a CSG member, a hybrid cell which is the CSG cell where a non-CSG member is also allowed access at the same time, and a mobile terminal which is subscribed as the CSG member and connected to the CSG cell or the hybrid cell as the CSG member. Even in a case in which a subscription time period has expired, the mobile communication system enables the mobile terminal to continue the connection. When the subscription time period for the CSG member expires, in case of the mobile terminal's connection to the CSG cell, the CSG cell initiates a handover, in case of the mobile terminal's connection to the hybrid cell, the hybrid cell changes treatment for the mobile terminal from treating the mobile terminal as the CSG member to treating the mobile terminal as the non-CSG member.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: December 25, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miho Maeda, Mitsuru Mochizuki, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
  • Publication number: 20180352555
    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: July 19, 2018
    Publication date: December 6, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuru MOCHIZUKI, Miho Maeda, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu