Patents by Inventor Yuu-Heng Alice Cheng

Yuu-Heng Alice Cheng 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: 9526040
    Abstract: A method of employing an encoding scheme for media independent handover, comprising: having at least some data type carry only required information to determine the end of data without a length value.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: December 20, 2016
    Assignees: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLOGIES, INC.
    Inventors: Yoshihiro Oba, Subir Das, Yuu-Heng Alice Cheng, Miriam Tauil, Kenichi Taniuchi
  • Patent number: 8908540
    Abstract: A single burst method is used to determine the available bandwidth in a network environment. A sending node transmits test packets to a receiving node. The size of the test packets is dynamically determining based on network parameters within the network environment. The sending node then receives test receipt packets that have the same sequence numbers as the corresponding test packets. Packet clusters are formed from the test receipt packets. The available bandwidth is determined based on the packet clusters along with values set by the single burst method or inputted by a user.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: December 9, 2014
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Victor Fajardo
  • Patent number: 8781473
    Abstract: A solution framework is employed that includes defining of a mechanism to run multiple queries in a single message exchange, along with a priority on a per-query basis. In some embodiments, a system for facilitating handover of a mobile device across heterogeneous access networks by ensuring response to queries transmitted by the mobile device includes: a) a mobile device having a plurality of wireless network interfaces for communicating over a plurality of heterogeneous access networks, having a media independent handover (MIH) entity to facilitate handovers between the heterogeneous networks, and configured to transmit queries related to handover operation between the heterogeneous access networks to MIH entities within said heterogeneous access networks; and b) said media independent handover entity of said mobile device being configured to transmit multiple queries in a single message exchange to an MIH entity in an access network with prioritization among said multiple queries.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 15, 2014
    Assignees: Toshiba America Research, Inc., Telecordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenichi Taniuchi
  • Patent number: 8514808
    Abstract: A media-independent handover (MIH) environment supports a MIH function that uses a mapping table to communicate with other MIH functions using a MIH transport protocol. The MIH function updates the mapping table upon receipt of a message having fields to invoke an operation. The operation can update an existing mapping or delete a mapping. The operation also can update a lifetime value for a mapping for a particular address. The mapping table includes mappings. A mapping includes a MIH function identifier, a list of transport addresses, and a lifetime value.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: August 20, 2013
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yuu-Heng Alice Cheng, Yoshihiro Ohba
  • Publication number: 20120165009
    Abstract: A solution framework is employed that includes defining of a mechanism to run multiple queries in a single message exchange, along with a priority on a per-query basis. In some embodiments, a system for facilitating handover of a mobile device across heterogeneous access networks by ensuring response to queries transmitted by the mobile device includes: a) a mobile device having a plurality of wireless network interfaces for communicating over a plurality of heterogeneous access networks, having a media independent handover (MIH) entity to facilitate handovers between the heterogeneous networks, and configured to transmit queries related to handover operation between the heterogeneous access networks to MIH entities within said heterogeneous access networks; and b) said media independent handover entity of said mobile device being configured to transmit multiple queries in a single message exchange to an MIH entity in an access network with prioritization among said multiple queries.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Applicants: TELCORDIA TECHNOLOGIES INC., TOSHIBA AMERICA RESEARCH, INC.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenichi Taniuchi
  • Patent number: 8190768
    Abstract: A terminal device includes multiple interfaces having links to various networks. When a trigger event occurs, the terminal device selects a target link to a network to transition from its current link. A candidate link selection function determines candidate links that are filtered to remove links not meeting connectivity criteria. A target link selection function is then executed to select a target link from the filtered candidate links. Thus, the target link selection function is not run for every possible link, but only those meeting the criteria.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: May 29, 2012
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Ashutosh Dutta, Miriam Tauil, David Famolari
  • Patent number: 8139603
    Abstract: Currently, the I.E.E.E. 802.21 specification allows multiple MIH (Media-Independent Handover) Users in a single MIH Function. However, the specification is not clear about how multiple MIH Users are supported by a single MIHF (MIH Function) under a constraint in which if there is only one MIH User is allowed to change the state of a particular link during a particular period of time. This document proposes a detailed architecture which allows for the co-existence of multiple MIH Users by introducing a link ownership scheme in the MIHF (MIH Function). The proposed link ownership scheme also supports the scenario in which the state of a link of a mobile node is changed by a network node by modifying the MIH_Register primitives in the I.E.E.E. 802.21 specification to signal the set of allocated links to a remote MIH User on the network node.
    Type: Grant
    Filed: July 6, 2008
    Date of Patent: March 20, 2012
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Victor Fajardo, Yoshihiro Oba, Yuu-Heng Alice Cheng
  • Patent number: 8107960
    Abstract: According to some of the preferred embodiments, a solution framework is employed that includes defining of a mechanism to run multiple queries in a single message exchange, along with a priority on a per-query basis.
    Type: Grant
    Filed: November 25, 2007
    Date of Patent: January 31, 2012
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenich Taniuchi
  • Publication number: 20100208613
    Abstract: A single burst method is used to determine the available bandwidth in a network environment. A sending node transmits test packets to a receiving node. The size of the test packets is dynamically determining based on network parameters within the network environment. The sending node then receives test receipt packets that have the same sequence numbers as the corresponding test packets. Packet clusters are formed from the test receipt packets. The available bandwidth is determined based on the packet clusters along with values set by the single burst method or inputted by a user.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 19, 2010
    Applicants: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLOGIES, INC.
    Inventors: Yoshihiro OBA, Yuu-Heng Alice CHENG, Victor FAJARDO
  • Publication number: 20100115083
    Abstract: A terminal device includes multiple interfaces having links to various networks. When a trigger event occurs, the terminal device selects a target link to a network to transition from its current link. A candidate link selection function determines candidate links that are filtered to remove links not meeting connectivity criteria. A target link selection function is then executed to select a target link from the filtered candidate links. Thus, the target link selection function is not run for every possible link, but only those meeting the criteria.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 6, 2010
    Applicants: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro OBA, Yuu-Heng Alice CHENG, Ashutosh DUTTA, Miriam TAUIL
  • Publication number: 20090232094
    Abstract: A media-independent handover (MIH) environment supports a MIH function that uses a mapping table to communicate with other MIH functions using a MIH transport protocol. The MIH function updates the mapping table upon receipt of a message having fields to invoke an operation. The operation can update an existing mapping or delete a mapping. The operation also can update a lifetime value for a mapping for a particular address. The mapping table includes mappings. A mapping includes a MIH function identifier, a list of transport addresses, and a lifetime value.
    Type: Application
    Filed: October 27, 2008
    Publication date: September 17, 2009
    Applicants: TOSHIBA RESEARCH AMERICA, INC., TELCORDIA TECHNOLOGIES, INC.
    Inventors: Yuu-Heng Alice CHENG, Yoshihiro OHBA
  • Publication number: 20090047959
    Abstract: A method of employing an encoding scheme for media independent handover, comprising: having at least some data type carry only required information to determine the end of data without a length value
    Type: Application
    Filed: May 12, 2008
    Publication date: February 19, 2009
    Applicants: TOSHIBA RESEARCH AMERICA, INC., TELCORDIA TECHNOLOGIES, INC.
    Inventors: Yoshihiro Oba, Subir Das, Yuu-Heng Alice Cheng, Miriam Tauil, Kenichi Taniuchi
  • Publication number: 20090016286
    Abstract: Currently, the I.E.E.E. 802.21 specification allows multiple MIH (Media-Independent Handover) Users in a single MIH Function. However, the specification is not clear about how multiple MIH Users are supported by a single MIHF (MIH Function) under a constraint in which if there is only one MIH User is allowed to change the state of a particular link during a particular period of time. This document proposes a detailed architecture which allows for the co-existence of multiple MIH Users by introducing a link ownership scheme in the MIHF (MIH Function). The proposed link ownership scheme also supports the scenario in which the state of a link of a mobile node is changed by a network node by modifying the MIH_Register primitives in the I.E.E.E. 802.21 specification to signal the set of allocated links to a remote MIH User on the network node.
    Type: Application
    Filed: July 6, 2008
    Publication date: January 15, 2009
    Applicants: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLOGIES, INC.
    Inventors: Victor Fajardo, Yoshihiro Oba, Yuu-Heng Alice Cheng
  • Publication number: 20080248780
    Abstract: A system and method is disclosed that includes a currency conversion mechanism for a mobile device prior to authenticating with and accessing a network in a foreign jurisdiction such that the mobile does not require knowledge of exchange rate between the currencies used in visited and home jurisdictions.
    Type: Application
    Filed: March 9, 2008
    Publication date: October 9, 2008
    Applicants: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng
  • Publication number: 20080176567
    Abstract: According to some of the preferred embodiments, a solution framework is employed that includes defining of a mechanism to run multiple queries in a single message exchange along with a priority on a per-query basis, In some embodiments, a system for facilitating handover of a mobile device across heterogeneous access networks by ensuring response to queries transmitted by the mobile device includes: a) a mobile device having a plurality of wireless network interfaces for communicating over a plurality of heterogeneous access networks, having a media independent handover (MIH) entity to facilitate handovers between the heterogeneous networks, and configured to transmit queries related to handover operation between the heterogeneous access networks to MIH entities within said heterogeneous access networks; and b) said media independent handover entity of said mobile device being configured to transmit multiple queries in a single message exchange to an MIH entity in an access network with prioritization among s
    Type: Application
    Filed: November 25, 2007
    Publication date: July 24, 2008
    Applicants: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenich Taniuchi