Patents by Inventor Bunpei Yatsu

Bunpei Yatsu 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: 9641698
    Abstract: An object of the invention is to provide a communication service with high utilization efficiency. A mobile communication network distribution system includes: an acquisition unit that acquires condition information; a determination unit that determines a degenerate mobile communication network which provides a function satisfying a functional requirement based on the condition information acquired by the acquisition unit among a plurality of mobile communication networks to be a connection destination mobile communication network which is a connection destination of the UE; and a distribution unit that distributes the connection destination of the mobile communication terminal to the connection destination mobile communication network determined by the determination unit.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: May 2, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Motoshi Tamura, Shigeru Iwashina, Takahiro Yamazaki, Bunpei Yatsu, Tetsuya Nakamura, Takashi Shimizu
  • Patent number: 9521586
    Abstract: A mobile communication system includes an OpenFlow network and CSCFs. A first CSCF comprises a terminal information assigning unit that assigns information of an incoming terminal of a destination of a signal accommodated in a second CSCF to a header part of a signal destined for the second CSCF. The OpenFlow network comprises a storage unit that stores a correspondence relationship between the incoming terminal and a device accommodating the incoming terminal, a terminal information acquisition unit that acquires information of the incoming terminal from the header part of the signal, a transmission destination identification unit that identifies the device that is a transmission destination from the information, and an open flow transmission unit that transmits a signal to the identified device.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: December 13, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Bunpei Yatsu, Takahiro Yamazaki, Motoshi Tamura, Tetsuya Nakamura, Shigeru Iwashina, Takashi Shimizu
  • Patent number: 9451483
    Abstract: A mobile communication system includes a plurality of call-processing servers, a call processing management database that holds data necessary for call processing, and a network manager. The network manager comprises a node state recognition unit that recognizes states of the call-processing servers, and a control unit that determines the call-processing node that processes a call processing request based on the states. The call-processing server comprises a call processing request accepting unit that accepts a call processing request, an acquisition unit that acquires information of a mobile communication terminal related to the call processing request from the database, a call processing unit that performs call processing using the acquired information; and a call processing result storage unit that stores information of a result of the call processing in the database.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: September 20, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Bunpei Yatsu, Takahiro Yamazaki, Motoshi Tamura, Tetsuya Nakamura, Shigeru Iwashina, Takashi Shimizu
  • Publication number: 20150156336
    Abstract: An object of the invention is to provide a communication service with high utilization efficiency. A mobile communication network distribution system includes: an acquisition unit that acquires condition information; a determination unit that determines a degenerate mobile communication network which provides a function satisfying a functional requirement based on the condition information acquired by the acquisition unit among a plurality of mobile communication networks to be a connection destination mobile communication network which is a connection destination of the UE; and a distribution unit that distributes the connection destination of the mobile communication terminal to the connection destination mobile communication network determined by the determination unit.
    Type: Application
    Filed: April 26, 2013
    Publication date: June 4, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Motoshi Tamura, Shigeru Iwashina, Takahiro Yamazaki, Bunpei Yatsu, Tetsuya Nakamura, Takashi Shimizu
  • Publication number: 20150142958
    Abstract: A network manager is included in a mobile communication system including virtual call processing servers realized on any of one or more physical servers in association with an area in which a mobile communication terminal is present, and performing a communication process of the mobile communication terminal. The network manager includes a detection unit that detects processing load of a communication process of each physical server, a node generation unit that generates a virtual call processing server for each area based on the detected processing load of the communication process, and a control unit that performs control to transmit a signal related to the communication process from the mobile communication terminal to the virtual call processing server generated in association with the area in which the mobile communication terminal is present.
    Type: Application
    Filed: April 2, 2013
    Publication date: May 21, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Motoshi Tamura, Bunpei Yatsu, Takahiro Yamazaki, Tetsuya Nakamura, Shigeru Iwashina, Takashi Shimizu
  • Publication number: 20150024761
    Abstract: A mobile communication system includes a plurality of call-processing servers, a call processing management database that holds data necessary for call processing, and a network manager. The network manager comprises a node state recognition unit that recognizes states of the call-processing servers, and a control unit that determines the call-processing node that processes a call processing request based on the states. The call-processing server comprises a call processing request accepting unit that accepts a call processing request, an acquisition unit that acquires information of a mobile communication terminal related to the call processing request from the database, a call processing unit that performs call processing using the acquired information; and a call processing result storage unit that stores information of a result of the call processing in the database.
    Type: Application
    Filed: January 23, 2013
    Publication date: January 22, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Bunpei Yatsu, Takahiro Yamazaki, Motoshi Tamura, Tetsuya Nakamura, Shigeru Iwashina, Takashi Shimizu
  • Publication number: 20150009934
    Abstract: A mobile communication system includes an OpenFlow network and CSCFs. A first CSCF comprises a terminal information assigning unit that assigns information of an incoming terminal of a destination of a signal accommodated in a second CSCF to a header part of a signal destined for the second CSCF. The OpenFlow network comprises a storage unit that stores a correspondence relationship between the incoming terminal and a device accommodating the incoming terminal, a terminal information acquisition unit that acquires information of the incoming terminal from the header part of the signal, a transmission destination identification unit that identifies the device that is a transmission destination from the information, and an open flow transmission unit that transmits a signal to the identified device.
    Type: Application
    Filed: February 20, 2013
    Publication date: January 8, 2015
    Applicant: NTT DOCOMO, INC.
    Inventors: Bunpei Yatsu, Takahiro Yamazaki, Motoshi Tamura, Tetsuya Nakamura, Shigeru Iwashina, Takashi Shimizu