Patents by Inventor Nobuaki Futana

Nobuaki Futana 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).

  • Communication method, mobile agent device, and home agent device
    Patent number: 8717941
    Abstract: In a communication system including a MN, a MFA connected to the MN, and a HA connected to a home network of the MN, the HA holds a layer 3 address of the HA and a source layer 3 address of a registration request by associating them with each other. The MFA transmits a layer 2 frame from the MN to the HA by encapsulating it. The HA decapsulates the frame to transmit it to the home network. When the HA receives a layer 2 frame from the home network, the HA checks that the destination layer 3 address is registered, and encapsulates the layer 2 frame to transmit it to a source layer 3 address of the registration request that is registered being associated with the destination layer 3 address. The MFA decapsulate the encapsulated layer 2 frame to transmit the layer 2 frame to the MN.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: May 6, 2014
    Assignee: NTTPC Communications, Inc.
    Inventors: Hiroaki Hata, Nobuaki Futana, Hajime Ishikawa
  • COMMUNICATION METHOD, MOBILE AGENT DEVICE, AND HOME AGENT DEVICE
    Publication number: 20090092095
    Abstract: In a communication system including a MN, a MFA connected to the MN, and a HA connected to a home network of the MN, the HA holds a layer 3 address of the HA and a source layer 3 address of a registration request by associating them with each other. The MFA transmits a layer 2 frame from the MN to the HA by encapsulating it. The HA decapsulates the frame to transmit it to the home network. When the HA receives a layer 2 frame from the home network, the HA checks that the destination layer 3 address is registered, and encapsulates the layer 2 frame to transmit it to a source layer 3 address of the registration request that is registered being associated with the destination layer 3 address. The MFA decapsulate the encapsulated layer 2 frame to transmit the layer 2 frame to the MN.
    Type: Application
    Filed: November 16, 2006
    Publication date: April 9, 2009
    Applicant: NTTPC COMMUNICATIONS, INC.
    Inventors: Hiroaki Hata, Nobuaki Futana, Hajime Ishikawa