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).
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Patent number: 9526040Abstract: 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: GrantFiled: May 12, 2008Date of Patent: December 20, 2016Assignees: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLOGIES, INC.Inventors: Yoshihiro Oba, Subir Das, Yuu-Heng Alice Cheng, Miriam Tauil, Kenichi Taniuchi
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Patent number: 8908540Abstract: 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: GrantFiled: February 13, 2009Date of Patent: December 9, 2014Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Victor Fajardo
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Patent number: 8781473Abstract: 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: GrantFiled: December 23, 2011Date of Patent: July 15, 2014Assignees: Toshiba America Research, Inc., Telecordia Technologies, Inc.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenichi Taniuchi
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Patent number: 8514808Abstract: 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: GrantFiled: October 27, 2008Date of Patent: August 20, 2013Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yuu-Heng Alice Cheng, Yoshihiro Ohba
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Publication number: 20120165009Abstract: 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: ApplicationFiled: December 23, 2011Publication date: June 28, 2012Applicants: TELCORDIA TECHNOLOGIES INC., TOSHIBA AMERICA RESEARCH, INC.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenichi Taniuchi
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Patent number: 8190768Abstract: 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: GrantFiled: October 31, 2008Date of Patent: May 29, 2012Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Ashutosh Dutta, Miriam Tauil, David Famolari
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Patent number: 8139603Abstract: 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: GrantFiled: July 6, 2008Date of Patent: March 20, 2012Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Victor Fajardo, Yoshihiro Oba, Yuu-Heng Alice Cheng
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Patent number: 8107960Abstract: 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: GrantFiled: November 25, 2007Date of Patent: January 31, 2012Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenich Taniuchi
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Publication number: 20100208613Abstract: 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: ApplicationFiled: February 13, 2009Publication date: August 19, 2010Applicants: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLOGIES, INC.Inventors: Yoshihiro OBA, Yuu-Heng Alice CHENG, Victor FAJARDO
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Publication number: 20100115083Abstract: 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: ApplicationFiled: October 31, 2008Publication date: May 6, 2010Applicants: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yoshihiro OBA, Yuu-Heng Alice CHENG, Ashutosh DUTTA, Miriam TAUIL
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Publication number: 20090232094Abstract: 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: ApplicationFiled: October 27, 2008Publication date: September 17, 2009Applicants: TOSHIBA RESEARCH AMERICA, INC., TELCORDIA TECHNOLOGIES, INC.Inventors: Yuu-Heng Alice CHENG, Yoshihiro OHBA
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Publication number: 20090047959Abstract: 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 valueType: ApplicationFiled: May 12, 2008Publication date: February 19, 2009Applicants: TOSHIBA RESEARCH AMERICA, INC., TELCORDIA TECHNOLOGIES, INC.Inventors: Yoshihiro Oba, Subir Das, Yuu-Heng Alice Cheng, Miriam Tauil, Kenichi Taniuchi
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Publication number: 20090016286Abstract: 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: ApplicationFiled: July 6, 2008Publication date: January 15, 2009Applicants: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLOGIES, INC.Inventors: Victor Fajardo, Yoshihiro Oba, Yuu-Heng Alice Cheng
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Publication number: 20080248780Abstract: 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: ApplicationFiled: March 9, 2008Publication date: October 9, 2008Applicants: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng
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Publication number: 20080176567Abstract: 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 sType: ApplicationFiled: November 25, 2007Publication date: July 24, 2008Applicants: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Yoshihiro Oba, Yuu-Heng Alice Cheng, Subir Das, Kenich Taniuchi