Patents by Inventor Angela L. Chiu
Angela L. Chiu 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: 10491546Abstract: A provider edge (“PE”) router system and a PE router system controller for hybrid virtualization of PE router functions is disclosed herein. According to one aspect of the concepts and technologies disclosed herein, a PE router system operating at a PE of a network includes an elastic computing system and a plurality of switches. The elastic computing system can include a plurality of hardware resources and a plurality of virtual machines. Each virtual machine of the plurality of virtual machines can utilize at least a portion of the plurality of hardware resources to perform operations. The plurality of virtual machines can include a port virtual machine that provides an interface to a customer edge (“CE”) router operating at a CE of the network. The port virtual machine can provide a first set of operations. The plurality of switches can provide a second set of operations.Type: GrantFiled: February 25, 2015Date of Patent: November 26, 2019Assignee: AT&T Intellectual Property I, L.P.Inventors: Vijay Gopalakrishnan, Angela L. Chiu, Oliver Spatscheck, Chengwei Wang, Yang Xu
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Patent number: 10171197Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: GrantFiled: August 14, 2017Date of Patent: January 1, 2019Assignee: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar G. Bathula, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Patent number: 10148349Abstract: A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such architecture, includes any one of plural node elements participating in the detection and restoration of the joint IP/Optical Layer architecture upon the failure of a router in one of the nodes. The plural node elements may include, but are not limited to, one of plural routers and an optical cross-connect.Type: GrantFiled: May 25, 2017Date of Patent: December 4, 2018Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Angela L. Chiu, John Lester Strand
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Publication number: 20170346590Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: ApplicationFiled: August 14, 2017Publication date: November 30, 2017Inventors: Balagangadhar G. Bathula, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Publication number: 20170264361Abstract: A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such architecture, includes any one of plural node elements participating in the detection and restoration of the joint IP/Optical Layer architecture upon the failure of a router in one of the nodes. The plural node elements may include, but are not limited to, one of plural routers and an optical cross-connect.Type: ApplicationFiled: May 25, 2017Publication date: September 14, 2017Inventors: Angela L. Chiu, John Lester Strand
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Patent number: 9735912Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: GrantFiled: July 31, 2016Date of Patent: August 15, 2017Assignee: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar G. Bathula, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Patent number: 9705590Abstract: A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such architecture, includes any one of plural node elements participating in the detection and restoration of the joint IP/Optical Layer architecture upon the failure of a router in one of the nodes. The plural node elements may include, but are not limited to, one of plural routers and an optical cross-connect.Type: GrantFiled: April 22, 2015Date of Patent: July 11, 2017Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Angela L. Chiu, John Lester Strand
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Publication number: 20160344506Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: ApplicationFiled: July 31, 2016Publication date: November 24, 2016Inventors: BALAGANGADHAR G. BATHULA, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Publication number: 20160248703Abstract: A provider edge (“PE”) router system and a PE router system controller for hybrid virtualization of PE router functions is disclosed herein. According to one aspect of the concepts and technologies disclosed herein, a PE router system operating at a PE of a network includes an elastic computing system and a plurality of switches. The elastic computing system can include a plurality of hardware resources and a plurality of virtual machines. Each virtual machine of the plurality of virtual machines can utilize at least a portion of the plurality of hardware resources to perform operations. The plurality of virtual machines can include a port virtual machine that provides an interface to a customer edge (“CE”) router operating at a CE of the network. The port virtual machine can provide a first set of operations. The plurality of switches can provide a second set of operations.Type: ApplicationFiled: February 25, 2015Publication date: August 25, 2016Applicant: AT&T Intellectual Property I, L.P.Inventors: Vijay Gopalakrishnan, Angela L. Chiu, Oliver Spatscheck, Chengwei Wang, Yang Xu
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Patent number: 9413640Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: GrantFiled: December 30, 2015Date of Patent: August 9, 2016Assignee: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar G. Bathula, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Publication number: 20160119222Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: ApplicationFiled: December 30, 2015Publication date: April 28, 2016Inventors: Balagangadhar G. Bathula, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Patent number: 9246623Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: GrantFiled: December 2, 2013Date of Patent: January 26, 2016Assignee: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar G. Bathula, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Publication number: 20150229387Abstract: A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such architecture, includes any one of plural node elements participating in the detection and restoration of the joint IP/Optical Layer architecture upon the failure of a router in one of the nodes. The plural node elements may include, but are not limited to, one of plural routers and an optical cross-connect.Type: ApplicationFiled: April 22, 2015Publication date: August 13, 2015Inventors: Angela L. Chiu, John Lester Strand
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Publication number: 20150155962Abstract: A method, computer-readable storage device and apparatus for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network are disclosed. For example, the method determines the reconfigurable optical add-drop multiplexer layer has asymmetric traffic, and routes the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer.Type: ApplicationFiled: December 2, 2013Publication date: June 4, 2015Applicant: AT&T Intellectual Property I, L.P.Inventors: BALAGANGADHAR G. BATHULA, Angela L. Chiu, Mark David Feuer, Rakesh Kumar Sinha, John Lester Strand, Sheryl Leigh Woodward, Weiyi Zhang
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Patent number: 9042720Abstract: A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such architecture, includes any one of plural node elements participating in the detection and restoration of the joint IP/Optical Layer architecture upon the failure of a router in one of the nodes. The plural node elements may include, but are not limited to, one of plural routers and an optical cross-connect.Type: GrantFiled: December 13, 2005Date of Patent: May 26, 2015Assignee: AT&T Intellectual Property II, L.P.Inventors: Angela L Chiu, John Lester Strand
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Patent number: 7948899Abstract: This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.Type: GrantFiled: December 11, 2009Date of Patent: May 24, 2011Assignee: AT&T Intellectual Property II, LPInventors: Angela L. Chiu, Seyhan Civanlar, Leonard L. Lu, Zhuangbo Tang
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Patent number: 7778182Abstract: This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.Type: GrantFiled: August 26, 2005Date of Patent: August 17, 2010Assignee: AT&T Intellectual Property II, L.P.Inventors: Angela L. Chiu, Seyhan Civanlar, Leonard L. Lu, Zhuangbo Tang
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Publication number: 20100091656Abstract: This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.Type: ApplicationFiled: December 11, 2009Publication date: April 15, 2010Inventors: Angela L. Chiu, Seyhan Civanlar, Leonard L. Lu, Zhuangbo Tang
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Publication number: 20090257742Abstract: A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such architecture, includes any one of plural node elements participating in the detection and restoration of the joint IP/Optical Layer architecture upon the failure of a router in one of the nodes. The plural node elements may include, but are not limited to, one of plural routers and an optical cross-connect.Type: ApplicationFiled: December 13, 2005Publication date: October 15, 2009Inventors: Angela L. Chiu, John Lester Strand
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Patent number: 7230924Abstract: This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.Type: GrantFiled: March 28, 2001Date of Patent: June 12, 2007Assignee: AT&T Corp.Inventors: Angela L. Chiu, Seyhan Civanlar, Leonard L. Lu, Zhuangbo Tang