Patents by Inventor Wakana Tsuchino

Wakana Tsuchino 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).

  • Home agent
    Patent number: 8509182
    Abstract: When handover is performed from a first network to a second network, a home agent transmits a reply request message to a terminal through the first network after new configuration of a tunnel for transmitting and receiving a packet through the second network. If the home agent receives a reply message corresponding to the reply request message through the first network, the home agent detects that the configuration of the tunnel for transmitting and receiving the packet through the first network can be deleted, and deletes the configuration of the tunnel.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: August 13, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Kozakai, Seijiro Yoneyama, Wakana Tsuchino, Masahiro Ishiyama
  • Mobile terminal
    Patent number: 8355381
    Abstract: When handover is performed from a first network to a second network, a terminal transmits a reply request message to a home agent through the first network after new configuration of a tunnel for transmitting and receiving a packet through the second network. If the terminal receives a reply message corresponding to the reply request message through the first network, the terminal detects that the configuration of the tunnel for transmitting and receiving the packet through the first network can be deleted, and deletes the configuration of the tunnel.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: January 15, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Kozakai, Seijiro Yoneyama, Wakana Tsuchino, Masahiro Ishiyama
  • MOBILE TERMINAL
    Publication number: 20100046473
    Abstract: When handover is performed from a first network to a second network, a terminal transmits a reply request message to a home agent through the first network after new configuration of a tunnel for transmitting and receiving a packet through the second network. If the terminal receives a reply message corresponding to the reply request message through the first network, the terminal detects that the configuration of the tunnel for transmitting and receiving the packet through the first network can be deleted, and deletes the configuration of the tunnel.
    Type: Application
    Filed: August 25, 2009
    Publication date: February 25, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki Kozakai, Seijiro Yoneyama, Wakana Tsuchino, Masahiro Ishiyama
  • HOME AGENT
    Publication number: 20100046474
    Abstract: When handover is performed from a first network to a second network, a home agent transmits a reply request message to a terminal through the first network after new configuration of a tunnel for transmitting and receiving a packet through the second network. If the home agent receives a reply message corresponding to the reply request message through the first network, the home agent detects that the configuration of the tunnel for transmitting and receiving the packet through the first network can be deleted, and deletes the configuration of the tunnel.
    Type: Application
    Filed: August 25, 2009
    Publication date: February 25, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki Kozakai, Seijiro Yoneyama, Wakana Tsuchino, Masahiro Ishiyama
  • Bridging device and method and computer readable medium for controlling the same
    Patent number: 7649887
    Abstract: A bridging device, and a method and computer readable medium for controlling the bridging device, wherein the bridging device stores router identifying information and network prefix information contained in a router advertisement (RA) that is regularly sent from a router. When the stored router identifying information and network prefix information become invalid, the bridging device generates an RA packet containing new valid router identifying information and network prefix information, whose lifetime is set infinite, and sends the RA packet to a communication terminal. This arrangement can reduce the frequency of the transmission of the RA packet from the router to the communication terminal, thereby decreasing the RA-packet processing load of the communication terminal.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 19, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Wakana Tsuchino, Seijiro Yoneyama
  • BRIDGING DEVICE AND METHOD AND COMPUTER READABLE MEDIUM FOR CONTROLLING THE SAME
    Publication number: 20070133545
    Abstract: A bridging device, and a method and computer readable medium for controlling the bridging device, wherein the bridging device stores router identifying information and network prefix information contained in a router advertisement (RA) that is regularly sent from a router. When the stored router identifying information and network prefix information become invalid, the bridging device generates an RA packet containing new valid router identifying information and network prefix information, whose lifetime is set infinite, and sends the RA packet to a communication terminal. This arrangement can reduce the frequency of the transmission of the RA packet from the router to the communication terminal, thereby decreasing the RA-packet processing load of the communication terminal.
    Type: Application
    Filed: December 12, 2006
    Publication date: June 14, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Wakana Tsuchino, Seijiro Yoneyama