Patents by Inventor Toshiyuki Tamura

Toshiyuki Tamura 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: 10774186
    Abstract: Provided are a photodegradable hydrogel in which cells can be embedded in the photodegradable gel without causing cytotoxicity when the cells are embedded in the photodegradable gel by allowing the cells to coexist at the time of preparation of the photodegradable gel, and which contains a protein as one of the main components; a culture device using the same; a method for forming tissue; and a method for separating cells. A photodegradable hydrogel is obtained by condensation of an alkyne group contained in a cyclooctyne ring or an azacyclooctyne ring of the following compound A with an azido group of the following compound B.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: September 15, 2020
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Shinji Sugiura, Masato Tamura, Toshiyuki Takagi, Kimio Sumaru, Toshiyuki Kanamori, Fumiki Yanagawa
  • Patent number: 10764945
    Abstract: A RAN node (2) receives, from a core network node (6, 7, 8), a first identifier that is used by a service, an application, or an edge server (5) to identify a radio terminal (1) connected to the RAN node (2), and associates the first identifier with a second identifier that is used by the RAN node (2) to identify the radio terminal (1). Further, the RAN node (2) communicates with the edge server (5) using the first identifier. It is thus, for example, possible to allow an MEC server (or an MEC application hosted on the MEC server) and a radio access network (RAN) node to directly exchange therebetween a control message regarding a specific radio terminal.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 1, 2020
    Assignee: NEC Corporation
    Inventors: Takanori Iwai, Daisuke Mizukami, Hisashi Futaki, Sadafuku Hayashi, Hajime Zembutsu, Yoshinori Watanabe, Toshiyuki Tamura
  • Patent number: 10764443
    Abstract: To provide a gateway device that achieves charging control in accordance with a RAT being used by a UE even when the UE is performing communication using different RATs at the same time, the present gateway device (30) includes a management unit (31) configured to, when a communication terminal (10) forms communication aggregation by performing a first radio communication using a first radio access technology and a second radio communication using a second radio access technology, manage at least one bearer assigned to the communication terminal (10) in association with information indicating the first and second radio access technologies, and a charging system communication unit (32) configured to transmit the information indicating the first and second radio access technologies to at least one policy charging control device (40) that performs charging control.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: September 1, 2020
    Assignee: NEC Corporation
    Inventor: Toshiyuki Tamura
  • Publication number: 20200267539
    Abstract: The present disclosure relates to synchronizing a temporary identity in the UE and the network when the UE is RRC Inactive state over 3GPP access and temporary identity of the UE is changed over a Non-3GPP access in a scenario when the UE is connected to the same AMF via 3GPP and non-3GPP access.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: Toshiyuki TAMURA, Kundan TIWARI
  • Publication number: 20200260286
    Abstract: In order for making MTC more efficient and/or secure, a base station forming a communication system connects a UE to a core network. A node serves as an entering point to the core network for a service provider, and transmits traffic between the service provider and the UE. The node establishes, as a connection to the base station, a first connection for directly transceiving messages between the node and the base station. Alternatively, the node establishes a second connection for transparently transceiving the messages through a different node that is placed within the core network and has established a different secure connection to the base station.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Applicant: NEC Corporation
    Inventors: Xiaowei ZHANG, Anand Raghawa PRASAD, Andreas KUNZ, Genadi VELEV, Toshiyuki TAMURA
  • Publication number: 20200252782
    Abstract: A communication apparatus includes a location information acquisition unit that acquires location information of a terminal, a reception unit that receives a call request transmitted by the terminal, a service identification unit that identifies a service of the request based on the location information of the terminal and a destination telephone number of the request, and a transmission unit that transmits a response to the terminal, when the service corresponding to the request cannot be provided.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Applicant: NEC Corporation
    Inventors: Naoaki Suzuki, Toshiyuki Tamura
  • Publication number: 20200252798
    Abstract: A purpose of the present disclosure is to provide a communication system that are capable of maintaining a high security level in each divided network in the case of applying network slicing to a core network. A communication system according to the present disclosure includes a subscriber-information management apparatus (10) configured to manage subscriber information of a communication terminal; and a security apparatus (20) configured to manage identification information of the communication terminal in association with security information used in at least one network slice system usable by the communication terminal. The subscriber-information management apparatus (10) acquires, using the identification information of the communication terminal and identification information of a network slice system used by the communication terminal, security information used in the network slice system used by the communication terminal from the security apparatus (20).
    Type: Application
    Filed: April 20, 2020
    Publication date: August 6, 2020
    Applicant: NEC Corporation
    Inventors: Hironori ITO, Anand Raghawa PRASAD, Andreas KUNZ, Naoaki SUZUKI, Toshiyuki TAMURA
  • Publication number: 20200236723
    Abstract: The invention describes a method for dynamic switching between a control plane data transmission and user plane data transmission avoiding the Detach and consecutive re-attach procedure or TAU procedure. In particular the decision for switch between the different transmission schemes is based on various criteria like the size of the data packet or on total amount of data, etc.
    Type: Application
    Filed: March 5, 2020
    Publication date: July 23, 2020
    Inventors: Genadi VELEV, Iskren IANEV, Toshiyuki TAMURA
  • Publication number: 20200229120
    Abstract: The present disclosure is related to sending of a one time identifier of a UE during the NAS procedure. Specifically, the present disclosure relates to determining whether to use same one time identifier or different one time identifier during registration retry procedure.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Inventors: Kundan TIWARI, Toshiyuki TAMURA, Sheeba Backia Mary BASKARAN
  • Publication number: 20200229256
    Abstract: In order to provide a communication system capable of charging control in accordance with a bearer used by a UE even when the UE performs dual connectivity, a communication system according to the present disclosure includes a communication terminal (11) configured to communicate with a communication device (12) and a communication device (13) by using a different radio bearer for each of the communication device (12) and the communication device (13), and a control device (14) configured to determine whether to cause the communication device (12) to measure the traffic of each radio bearer.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Applicant: NEC Corporation
    Inventor: Toshiyuki TAMURA
  • Patent number: 10701543
    Abstract: A communication apparatus includes a location information acquisition unit that acquires location information of a terminal, a reception unit that receives a call request transmitted by the terminal, a service identification unit that identifies a service of the request based on the location information of the terminal and a destination telephone number of the request, and a transmission unit that transmits a response to the terminal, when the service corresponding to the request cannot be provided.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: June 30, 2020
    Assignee: NEC Corporation
    Inventors: Naoaki Suzuki, Toshiyuki Tamura
  • Patent number: 10701666
    Abstract: A mobile communication method in a mobile communication system according to the present invention in which when MME #1 is restarted in a first state in which a PDN connection #1 including one or more EPS bearers #1 is set among a UE, an S-GW #1, and a P-GW #1, the first state transitions to a second state in which the PDN connection #1 is released between the UE and the S-GW #1 and the connection is maintained only between the S-GW #1 and the P-GW #1, the mobile communication method including the step of not transmitting, by the MME #1, “Paging” whose destination is the UE upon receiving “DDN” including IMSI of the UE after detecting that re-attach processing for the mobile station has been executed in the second state.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: June 30, 2020
    Assignee: NEC CORPORATION
    Inventors: Katsutoshi Nishida, Toshiyuki Tamura
  • Publication number: 20200196130
    Abstract: A policy control function, PCF, node, comprising: transmitting means for transmitting a message related to information for updating policies of at least one of User Equipment, UE, access and Protocol Data Unit, PDU, Session selection, to a UE via an Access and Mobility Management Function, AMF node.
    Type: Application
    Filed: October 9, 2018
    Publication date: June 18, 2020
    Inventors: Toshiyuki TAMURA, Iskren IANEV
  • Publication number: 20200196287
    Abstract: The mobile communication system according to an exemplary embodiment of the present invention includes UE (45), MME (25), SGSN (27) and SGW (15). The SGW (15) includes means for, when ISR is active in the UE (45), the MME (25), the SGSN (27) and the SGW (15), sending a Downlink Data Notification message to the MME (25) and the SGSN (27), and when a Modify Bearer Request message is received from another MME (35) or another SGSN (37) different from the MME (25) and the SGSN (27), resending the Downlink Data Notification message only to another MME (35) or another SGSN (37) having sent the Modify Bearer Request message.
    Type: Application
    Filed: February 20, 2020
    Publication date: June 18, 2020
    Applicant: NEC CORPORATION
    Inventor: Toshiyuki TAMURA
  • Publication number: 20200187209
    Abstract: A communication terminal capable of determining whether or not it can perform DC, a base station, and a communication method are provided. A communication terminal (30) according to the present disclosure includes a communication unit (31) that simultaneously communicates with a master base station (10) associated with a first radio access technology and a secondary base station (20) associated with a second radio access technology, and a control unit (32) that specifies, when it is notified by the master base station (10) that it can provide dual connectivity using the second radio access technology, at least one frequency band supported by the secondary base station (20), the secondary base station being configured to provide the dual connectivity in cooperation with the master base station (10).
    Type: Application
    Filed: August 7, 2018
    Publication date: June 11, 2020
    Applicant: NEC Corporation
    Inventors: Toshiyuki TAMURA, Naoaki SUZUKI, Hisashi FUTAKI
  • Patent number: 10681553
    Abstract: In order for making MTC more efficient and/or secure, a base station forming a communication system connects a UE to a core network. A node serves as an entering point to the core network for a service provider, and transmits traffic between the service provider and the UE. The node establishes, as a connection to the base station, a first connection for directly transceiving messages between the node and the base station. Alternatively, the node establishes a second connection for transparently transceiving the messages through a different node that is placed within the core network and has established a different secure connection to the base station.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: June 9, 2020
    Assignee: NEC CORPORATION
    Inventors: Xiaowei Zhang, Anand Raghawa Prasad, Andreas Kunz, Genadi Velev, Toshiyuki Tamura
  • Publication number: 20200172282
    Abstract: The present application improves the shape of a curl part of a bottle can to secure high sealability even under high pressure in the can and during heat sterilization, makes bubbling-over occur less during cap opening, and suppresses misrecognition of reseal. A bottle can has a curl part provided at an opening end of a mouth part. The curl part includes an outer wall part extending downward from an upper end bent part. The outer wall part includes a first bent part shaping a locking part that extends continuously and downwardly from the upper end bent part and shapes an outwardly-protruding convex, and a second bent part that extends continuously and downwardly from the first bent part and shapes an inwardly-protruding convex.
    Type: Application
    Filed: May 2, 2018
    Publication date: June 4, 2020
    Applicant: TOYO SEIKAN CO., LTD.
    Inventors: Toshiyuki HASEGAWA, Masaomi TAMURA, Tomohiko NAKAMURA, Nobuhiro SASAJIMA, Takeshi MURASE
  • Patent number: 10674343
    Abstract: A communication apparatus includes a location information acquisition unit that acquires location information of a terminal, a reception unit that receives a call request transmitted by the terminal, a service identification unit that identifies a service of the request based on the location information of the terminal and a destination telephone number of the request, and a transmission unit that transmits a response to the terminal, when the service corresponding to the request cannot be provided.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: June 2, 2020
    Assignee: NEC Corporation
    Inventors: Naoaki Suzuki, Toshiyuki Tamura
  • Publication number: 20200169853
    Abstract: To provide a gateway device that achieves charging control in accordance with a RAT being used by a UE even when the UE is performing communication using different RATs at the same time, the present gateway device (30) includes a management unit (31) configured to, when a communication terminal (10) performs a first radio communication using a first radio access technology and a second radio communication using a second radio access technology, manage at least one bearer assigned to the communication terminal (10) in association with information indicating the first and second radio access technologies, and a charging system communication unit (32) configured to transmit the information indicating the first and second radio access technologies to at least one policy charging control device (40) that performs charging control.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 28, 2020
    Applicant: NEC Corporation
    Inventor: Toshiyuki TAMURA
  • Publication number: 20200154509
    Abstract: To provide a communication terminal that ensures the coincidence of Paging timing between a UE and a control device when an eDRX parameter is updated in a control device, a communication terminal (10) according to the present disclosure includes a receiving unit (11) for receiving a Tracking Area Registration Accept message or a Location Registration Accept message sent from a control device (30), and a sending unit (12) for sending a Tracking Area Registration Complete message or a Location Registration Complete message to the control device (30) when a first eDRX (Extended Idle Mode DRX) parameter is contained in the Tracking Area Registration Accept message or the Location Registration Accept message.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 14, 2020
    Applicant: NEC Corporation
    Inventors: Toshiyuki TAMURA, Kouji SHIMIZU, Takahiro AOKI, Hitoshi NAOE