Patents by Inventor Naoaki Suzuki

Naoaki Suzuki 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: 11153751
    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: Grant
    Filed: April 20, 2020
    Date of Patent: October 19, 2021
    Assignee: NEC Corporation
    Inventors: Hironori Ito, Anand Raghawa Prasad, Andreas Kunz, Naoaki Suzuki, Toshiyuki Tamura
  • Patent number: 11134103
    Abstract: A mobile network system comprises a security device and a network device. The security device stores slice security requirements which are different for each slice ID (identification). The slice ID indicates a network slice in a core network. The network device transmits, to the security device, a Slice Security Request including the slice ID. The network device receives, from the security device, a Slice Security Response including the slice security requirements related to the slice ID. The network device selects, based on the slice security requirements, a security algorithm for the network slice.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: September 28, 2021
    Assignee: NEC CORPORATION
    Inventors: Andreas Kunz, Anand Raghawa Prasad, Naoaki Suzuki, Hironori Ito
  • Publication number: 20210284590
    Abstract: A novel compound for a host material is provided. A compound for a host material that is capable of increasing the lifetime of a light-emitting device is provided. A light-emitting device with a long lifetime is provided. A material whose thermophysical properties such as a glass transition temperature are high is provided. An anthracene compound for a host material represented by General Formula (G1) below is provided. (Note that in General Formula (G1), R1 to R7 each independently represent hydrogen or an aryl group having 1 to 25 carbon atoms.
    Type: Application
    Filed: February 5, 2020
    Publication date: September 16, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroki SUZUKI, Satoshi SEO, Hiroshi KADOMA, Tsunenori SUZUKI, Naoaki HASHIMOTO
  • Patent number: 11116029
    Abstract: A network entity (5) sends, to a mobility management entity (6) or a subscriber server (9), a request message in order to configure the mobility management entity (6) to report a second identifier to be used by a radio access network node (2) for identifying a radio terminal (1). Further, the network entity (5) receives the second identifier from the mobility management entity (6) directly or through the subscriber server (9) and communicates with the radio access network node (2) by using the second identifier. It is thus, for example, possible to allow an MEC server (or an MEC application hosted on the MEC server) and the radio access network (RAN) node to directly exchange therebetween control messages regarding a specific radio terminal.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: September 7, 2021
    Assignee: NEC CORPORATION
    Inventors: Takanori Iwai, Nobuhiko Itoh, Ling Xu, Kenki Takagi, Toshiyuki Tamura, Tomoaki Hokao, Naoaki Suzuki, Hisashi Futaki, Sadafuku Hayashi, Kazuki Eguchi, Kouichi Kimura, Hiroki Aoki, Hideki Bessho, Yoshinori Watanabe, Tooru Kikuchi
  • Patent number: 11096031
    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: April 23, 2020
    Date of Patent: August 17, 2021
    Assignee: NEC CORPORATION
    Inventors: Naoaki Suzuki, Toshiyuki Tamura
  • Patent number: 11089514
    Abstract: An SCEF entity capable of reducing the number of messages between a control node such as an MME and an SCEF is provided. An SCEF entity (10) according to the present invention includes a storage unit (11) that buffers Non-IP data not delivered to a communication terminal (40) through a control node (20), and a control unit (12) that, upon receiving a control message sent from the control node (20) in response to a communication event that has occurred in the communication terminal (40), sends Non-IP data buffered in the storage unit (11) to the control node (20) without waiting for transmission of an indication message from the control node (20), the indication message explicitly indicating that Non-IP data is deliverable to the communication terminal (40).
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 10, 2021
    Assignee: NEC CORPORATION
    Inventors: Norio Uchida, Naoaki Suzuki
  • Patent number: 10911936
    Abstract: To provide an SCEF entity capable of suppressing an increase in processing load related to communication between an SCEF and an MME in Non-IP data communication. An SCEF entity (10) according to the present invention includes a storage unit (11) configured to buffer first Non-IP data not delivered to a communication terminal (40), and a control unit (12) configured to, when the first Non-IP data is buffered upon receiving second Non-IP data addressed to the communication terminal (40) from a server device (30), suppress transmission of the second Non-IP data to a control device (20) in a mobile network and buffer the second Non-IP data into the storage unit (11).
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: February 2, 2021
    Assignee: NEC CORPORATION
    Inventors: Naoaki Suzuki, Norio Uchida
  • Patent number: 10904740
    Abstract: Embodiments of this disclosure enable the I-CSCF and S-CSCF to detect inbound roaming UEs to network supporting Service Domain Centralization in IMS, so that the S-CSCF is able to select the appropriate database entity and can understand the CS authentication vector.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: January 26, 2021
    Assignee: NEC Corporation
    Inventors: Andreas Kunz, Naoaki Suzuki, Anand Raghawa Prasad
  • Publication number: 20200413228
    Abstract: A communication apparatus (10) according to the present disclosure includes a position information management unit (11) configured to manage a distribution area used in a mobile communication system and position information indicating a position of a communication terminal connected to an access system different from the mobile communication system while associating the distribution area with the position information, a communication terminal management unit (12) configured to manage the communication terminal and a distribution area to which the communication terminal belongs while associating the communication terminal with the distribution area based on positional information indicating a current position of the communication terminal, and a communication unit (13) configured to, when it receives distribution data for which the distribution area is designated as its distribution destination, transmit the distribution data, whose distribution destination has been changed to the communication terminal associ
    Type: Application
    Filed: February 14, 2019
    Publication date: December 31, 2020
    Applicant: NEC CORPORATOIN
    Inventors: Naoaki SUZUKI, Papageorgiou APOSTOLOS
  • Publication number: 20200374746
    Abstract: An object is to provide a control device which can control, in consideration of a traffic characteristic of an application operating between an application server and a communication terminal, traffic or a data amount transferred on a core network. A control device (10) according to the present example embodiment includes: a communication unit (12) configured to receive, via a service control device (20) which authenticates an application server (30) providing a service for a communication terminal (50), information relating to a transmittable data amount determined in the application server (30); and a control unit (11) configured to execute, by using the information relating to the transmittable data amount, traffic control on data transmitted from the communication terminal (50).
    Type: Application
    Filed: August 7, 2018
    Publication date: November 26, 2020
    Applicant: NEC Corporation
    Inventors: Hajime ZEMBUTSU, Toshiyuki TAMURA, Naoaki SUZUKI
  • Publication number: 20200329372
    Abstract: An object is to provide a key generation method capable of maintaining a high security level in each of sliced networks when network slicing is applied to a core network. A key generation method according to this disclosure specifies network slice identification information indicating a network slice system that provides a service to be used by a communication terminal (50) among a plurality of network slice systems included in a core network (10) and, using the network slice identification information, generates a service key to be used for security processing in the network slice system indicated by the network slice identification information.
    Type: Application
    Filed: June 30, 2020
    Publication date: October 15, 2020
    Applicant: NEC Corporation
    Inventors: Hironori ITO, Anand Raghawa PRASAD, Naoaki SUZUKI, Andreas KUNZ
  • 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
  • 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
  • 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: 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: 20200015067
    Abstract: Embodiments of this disclosure enable the I-CSCF and S-CSCF to detect inbound roaming UEs to network supporting Service Domain Centralization in IMS, so that the S-CSCF is able to select the appropriate database entity and can understand the CS authentication vector.
    Type: Application
    Filed: December 18, 2017
    Publication date: January 9, 2020
    Applicant: NEC Corporation
    Inventors: Andreas KUNZ, Naoaki SUZUKI, Anand Raghawa PRASAD
  • Patent number: 10531419
    Abstract: This invention provides a network node for IP Multimedia Subsystem (IMS) Centralized Services (ICS), comprising: a memory storing instructions; and at least one processor configured to process the instructions to: receive an Update Location Request with an IMSI (International Mobility Subscriber Identity) and an MSRN (Mobile Station Routing Number) from a MSC (Mobile Switching Centre) Server, retrieve a subscription profile and service settings from a HSS (Home Subscriber Server), map the subscription profile with service settings into a CS (Circuit-Switched) profile with CS settings, and send an Insert Subscriber Data message including the mapped CS profile and CS settings, to the MSC Server.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: January 7, 2020
    Assignee: NEC Corporation
    Inventors: Andreas Kunz, Genadi Velev, Filipe Leitao, Anand Raghawa Prasad, Naoaki Suzuki
  • Publication number: 20190373461
    Abstract: The present disclosure aims to provide a communication system capable of achieving advanced security in a 5G communication system. The communication system according to the present disclosure includes: a communication terminal (10); an Access and Mobility Management (AMF) entity (20) configured to execute Mobility Management (MM) processing regarding the communication terminal (10); and a Session Management Function (SMF) entity (30) configured to execute Session Management (SM) processing regarding the communication terminal (10), in which the communication terminal (10) sends an MM message used in the MM processing, a first security key having been applied to the MM message, between the communication terminal and the AMF entity (20), and sends an SM message used in the SM processing, a second security key having been applied to the SM message, between the communication terminal and the SMF entity (30) via the AMF entity (20).
    Type: Application
    Filed: January 17, 2018
    Publication date: December 5, 2019
    Applicant: NEC Corporation
    Inventors: Hironori ITO, Anand Raghawa PRASAD, Sivabalan ARUMUGAM, Sivakamy LAKSHMINARAYANAN, Naoaki SUZUKI, Andreas KUNZ
  • Publication number: 20190327598
    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: May 1, 2019
    Publication date: October 24, 2019
    Applicant: NEC Corporation
    Inventors: Naoaki SUZUKI, Toshiyuki TAMURA