Patents by Inventor Angela Chiu
Angela 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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Publication number: 20230134574Abstract: A multi-layer network planning system can determine a set of regenerator sites (“RSs”) that have been found to cover all paths among a set of nodes of an optical layer of a multi-layer network and can determine a set of candidate RSs in the optical layer for use by the links between a set of nodes of an upper layer, wherein each RS can be selected as a candidate RS for the links. The system can determine a binary path matrix for the links between the set of nodes of the upper layer. The system can determine a min-cost matrix that includes a plurality of min-cost paths. The system can determine a best RS from the set of candidate RSs and can move the best RS from the set of candidate RSs into the set of RSs for the links. The system can then update the binary path matrix.Type: ApplicationFiled: December 29, 2022Publication date: May 4, 2023Applicant: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar Bathula, Angela Chiu, Rakesh Sinha, Sheryl Leigh Woodward
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Patent number: 11552723Abstract: A multi-layer network planning system can determine a set of regenerator sites (“RSs”) that have been found to cover all paths among a set of nodes of an optical layer of a multi-layer network and can determine a set of candidate RSs in the optical layer for use by the links between a set of nodes of an upper layer, wherein each RS can be selected as a candidate RS for the links. The system can determine a binary path matrix for the links between the set of nodes of the upper layer. The system can determine a min-cost matrix that includes a plurality of min-cost paths. The system can determine a best RS from the set of candidate RSs and can move the best RS from the set of candidate RSs into the set of RSs for the links. The system can then update the binary path matrix.Type: GrantFiled: September 30, 2019Date of Patent: January 10, 2023Assignee: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar Bathula, Angela Chiu, Rakesh Sinha, Sheryl Leigh Woodward
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Patent number: 11349566Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: GrantFiled: November 30, 2020Date of Patent: May 31, 2022Assignee: AT&T Intellectual Property I, L.P.Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Patent number: 11032003Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: GrantFiled: February 3, 2020Date of Patent: June 8, 2021Assignee: AT&T Intellectual Property I, L.P.Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Publication number: 20210111795Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: ApplicationFiled: November 30, 2020Publication date: April 15, 2021Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Publication number: 20200177274Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: ApplicationFiled: February 3, 2020Publication date: June 4, 2020Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Patent number: 10554301Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: GrantFiled: February 4, 2019Date of Patent: February 4, 2020Assignee: AT&T Intellectual Property I, L.P.Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Publication number: 20200028608Abstract: A multi-layer network planning system can determine a set of regenerator sites (“RSs”) that have been found to cover all paths among a set of nodes of an optical layer of a multi-layer network and can determine a set of candidate RSs in the optical layer for use by the links between a set of nodes of an upper layer, wherein each RS can be selected as a candidate RS for the links. The system can determine a binary path matrix for the links between the set of nodes of the upper layer. The system can determine a min-cost matrix that includes a plurality of min-cost paths. The system can determine a best RS from the set of candidate RSs and can move the best RS from the set of candidate RSs into the set of RSs for the links. The system can then update the binary path matrix.Type: ApplicationFiled: September 30, 2019Publication date: January 23, 2020Applicant: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar Bathula, Angela Chiu, Rakesh Sinha, Sheryl Leigh Woodward
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Publication number: 20190327016Abstract: A multi-layer network planning system can determine a set of regenerator sites (“RSs”) that have been found to cover all paths among a set of nodes of an optical layer of a multi-layer network and can determine a set of candidate RSs in the optical layer for use by the links between a set of nodes of an upper layer, wherein each RS can be selected as a candidate RS for the links. The system can determine a binary path matrix for the links between the set of nodes of the upper layer. The system can determine a min-cost matrix that includes a plurality of min-cost paths. The system can determine a best RS from the set of candidate RSs and can move the best RS from the set of candidate RSs into the set of RSs for the links. The system can then update the binary path matrix.Type: ApplicationFiled: April 18, 2018Publication date: October 24, 2019Applicant: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar Bathula, Angela Chiu, Rakesh Sinha, Sheryl Leigh Woodward
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Patent number: 10432342Abstract: A multi-layer network planning system can determine a set of regenerator sites (“RSs”) that have been found to cover all paths among a set of nodes of an optical layer of a multi-layer network and can determine a set of candidate RSs in the optical layer for use by the links between a set of nodes of an upper layer, wherein each RS can be selected as a candidate RS for the links. The system can determine a binary path matrix for the links between the set of nodes of the upper layer. The system can determine a min-cost matrix that includes a plurality of min-cost paths. The system can determine a best RS from the set of candidate RSs and can move the best RS from the set of candidate RSs into the set of RSs for the links. The system can then update the binary path matrix.Type: GrantFiled: April 18, 2018Date of Patent: October 1, 2019Assignee: AT&T Intellectual Property I, L.P.Inventors: Balagangadhar Bathula, Angela Chiu, Rakesh Sinha, Sheryl Leigh Woodward
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Publication number: 20190173579Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: ApplicationFiled: February 4, 2019Publication date: June 6, 2019Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Patent number: 10200121Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: GrantFiled: June 14, 2017Date of Patent: February 5, 2019Assignee: AT&T Intellectual Property I, L.P.Inventors: Sheryl Woodward, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Publication number: 20180367214Abstract: Devices, computer-readable media and methods are disclosed for determining reachability for a wavelength connection in a telecommunication network. For example, a processor deployed in a telecommunication network may calculate a fiber loss on a link in the telecommunication network using optical power measurements and determine that a destination node of a wavelength connection is not reachable via a path that includes the link based upon the fiber loss of the link that is calculated. In one example, the determining is based upon a number of links in the path, an effective fiber loss for each link in the path, a penalty for nodes in the path, and an acceptable loss value. The processor may further perform a remedial action in response to determining that the destination node of the wavelength connection is not reachable via the path.Type: ApplicationFiled: June 14, 2017Publication date: December 20, 2018Inventors: SHERYL WOODWARD, Kathleen Tse, Martin Birk, Angela Chiu, Balagangadhar Bathula
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Patent number: 8195048Abstract: The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the improvement teaches the use of a single optical transport system for both metropolitan area transport and long haul transport of data and voice traffic.Type: GrantFiled: August 13, 2009Date of Patent: June 5, 2012Assignee: Pivotal Decisions LLCInventors: Angela Chiu, Michael Herbert Eiselt, Jay Martin Wiesenfeld, Lara Denise Garrett, Mark Shtaif
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Patent number: 7805075Abstract: A method includes receiving a restoration indicator associated with a path that includes an optical cross-connect (OXC). The OXC is reconfigured from a standby configuration to a restoration configuration in response to the restoration indicator. An optical signal received in a first direction at a first wavelength is optically regenerated to produce an optical signal in the first direction at a second wavelength. An optical signal received in a second direction at the second wavelength is optically regenerated to produce an optical signal in the second direction at the first wavelength.Type: GrantFiled: April 27, 2009Date of Patent: September 28, 2010Assignee: AT&T Intellectual Property II, L.P.Inventors: Angela Chiu, John L. Strand, Robert Tkach
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Publication number: 20100021159Abstract: The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the improvement teaches the use of a single optical transport system for both metropolitan area transport and long haul transport of data and voice traffic.Type: ApplicationFiled: August 13, 2009Publication date: January 28, 2010Inventors: Angela Chiu, Michael Herbert Eiselt, Jay Martin Wiesenfeld, Lara Denise Garrett, Mark Shtaif
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Patent number: 7593637Abstract: The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the improvement teaches the use of a single optical transport system for both metropolitan area transport and long haul transport of data and voice traffic.Type: GrantFiled: April 30, 2003Date of Patent: September 22, 2009Inventors: Angela Chiu, Michael Herbert Eiselt, Jay Martin Wiesenfeld, Lara Denise Garrett, Mark Shtaif
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Publication number: 20090208203Abstract: A method includes receiving a restoration indicator associated with a path that includes an optical cross-connect (OXC). The OXC is reconfigured from a standby configuration to a restoration configuration in response to the restoration indicator. An optical signal received in a first direction at a first wavelength is optically regenerated to produce an optical signal in the first direction at a second wavelength. An optical signal received in a second direction at the second wavelength is optically regenerated to produce an optical signal in the second direction at the first wavelength.Type: ApplicationFiled: April 27, 2009Publication date: August 20, 2009Inventors: Angela Chiu, John L. Strand, Robert Tkach
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Patent number: 7526198Abstract: A method includes receiving a restoration indicator associated with a path that includes an optical cross-connect (OXC). The OXC is reconfigured from a standby configuration to a restoration configuration in response to the restoration indicator. An optical signal received in a first direction at a first wavelength is optically regenerated to produce an optical signal in the first direction at a second wavelength. An optical signal received in a second direction at the second wavelength is optically regenerated to produce an optical signal in the second direction at the first wavelength.Type: GrantFiled: November 30, 2005Date of Patent: April 28, 2009Assignee: AT&T Corp.Inventors: Angela Chiu, John L. Strand, Robert Tkach
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Publication number: 20060165410Abstract: An arrangement in a node in an optical communication network has one or more terminals 220 and/or 222 configured to provide local access to the network through the node, and an all-optical routing arrangement 202-204-206-208 configured to route optical signals among optical pathways extending from the node. The optical pathways include inter-node optical pathways (for example, pathways N and/or W) configured to carry optical signals into and out of the node to respective other elements in the network, as well as intra-node optical pathways (for example, pathway E) dedicated to carry optical signals between the routing arrangement and respective terminals so as to provide the local access to the network through the node. Placing the terminals on optical pathways allows redundancy of the terminals to avoid node isolation if a terminal fails, yet is more economical than conventional arrangements requiring a terminal for each pathway into the node.Type: ApplicationFiled: January 26, 2005Publication date: July 27, 2006Inventors: Martin Birk, Angela Chiu, Dah-Min Hwang, John Strand, Kathleen Tse