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公开(公告)号：US11563640B2
公开(公告)日：2023-01-24
申请号：US16219290
申请日：2018-12-13
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Gagan Choudhury , Simon Tse , Narayan Padi , Alvin Goddard , Lynn Rivera
IPC: H04L41/12 , H04L45/00 , H04L9/40 , H04L41/00 , H04L43/0811 , H04L43/028
Abstract: A parser model may be used with software-defined applications or controllers. A network topology may be detected and based on the change in the network topology, a network device may filter certain network data traffic for processing by a software-defined network controller.
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公开(公告)号：US10966121B1
公开(公告)日：2021-03-30
申请号：US16918612
申请日：2020-07-01
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Kartik Pandit , Shweta Vachhani , Tzuu-Yi Wang , Steven A. Monetti , Kenichi Futamura , Simon Tse , Narayan Padi
Abstract: The technologies described herein are generally directed to centralized management of wireless relay node equipment in a fifth generation (5G) or other next generation networks. In accordance with one or more embodiments, a method described herein can include facilitating identifying a connection between first network equipment and second network equipment, the first network equipment being connected to a user equipment and the second network equipment. In embodiments, the method can further include facilitating monitoring the connection between the first network equipment and the second network equipment, resulting in monitoring data, wherein the second network equipment is communicatively coupled to backhaul network equipment, and with the user equipment being communicatively coupled to the backhaul network equipment via the second network equipment. Further, based on the monitoring data, adjusting, by the centralized controller system, a characteristic of the connection, in accordance with embodiments.
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公开(公告)号：US20200007629A1
公开(公告)日：2020-01-02
申请号：US16021363
申请日：2018-06-28
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Simon Tse , Alvin Goddard , Catherine Ferraro , Gagan Choudhury , Narayan Padi , Lynn Rivera
IPC: H04L29/08 , H04L12/26 , H04L12/717 , H04L12/54
Abstract: In one example, a method for monitoring the state and health of a centralized software defined networking controller includes detecting, by a standby software defined networking controller, when a number of path computation client sessions reported by an active software defined networking controller fails to match an expected number; verifying, by the standby software defined networking controller after expiration of a predefined delay implemented after the detecting, that the number of path computation client sessions reported by the active software defined networking controller still fails to match the expected number; and assuming, by the standby software defined networking controller after the verifying, a role of the active software defined networking controller.
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公开(公告)号：US11863430B2
公开(公告)日：2024-01-02
申请号：US17675790
申请日：2022-02-18
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Narayan Padi , Gagan Choudhury , Kenichi Futamura , Shweta Vachhani , Alvin C. Goddard , Timothy E. Gallivan , Harpreet Ahluwalia
IPC: H04M3/00 , H04L45/24 , H04L45/28 , H04L41/0659
CPC classification number: H04L45/245 , H04L41/0659 , H04L45/28
Abstract: Aspects of the subject disclosure may include, for example, generating a set of SRLGs associated with a set of link bundles, wherein the set of SRLGs comprises for each SRLG in the set of SRLGs an indication for each failed link bundle in a particular SRLG a respective bandwidth failure fraction, and wherein for at least one of the failed link bundles the failure is less than a complete failure; generating a set of dominance relationships among the SRLGs in the set of SRLGs, and generating, based at least in part upon the set of SRLGs and the set of dominance relationships a packed set of SRLGs, wherein the packed set of SRLGs comprises a subset of the set of SRLGs. Other embodiments are disclosed.
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公开(公告)号：US20230261980A1
公开(公告)日：2023-08-17
申请号：US17672388
申请日：2022-02-15
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Narayan Padi , Shweta Vachhani , Aswatnarayan Raghuram , Juby J. Chacko , Harpreet Ahluwalia , Kenichi Futamura , Gagan Choudhury , Alvin C. Goddard
IPC: H04L45/28 , H04L43/0882 , H04L43/16
CPC classification number: H04L45/28 , H04L43/16 , H04L43/0882
Abstract: Aspects of the subject disclosure may include, for example, obtaining for a first path carrying first network traffic a corresponding first alternate path; obtaining for a second path carrying second network traffic a corresponding second alternate path, at least a first portion of the first alternate path being the same as at least a second portion of the second alternate path; responsive to a first detected failure on the first path, causing communication of first re-directed network traffic via the first alternate path instead of via the first path; responsive to a second detected failure on the second path, detecting whether total traffic, including the first re-directed network traffic, on the first portion of the first alternate path meets a threshold; responsive to the detected meeting of the threshold, obtaining for the second path a corresponding back-up alternate path; and causing communication of second re-directed network traffic via the back-up alternative path instead of via the second path. Other embodiments are disclosed.
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Patent Agency Ranking
公开(公告)号：US10728140B2
公开(公告)日：2020-07-28
申请号：US15845280
申请日：2017-12-18
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Gagan Choudhury , Kang Xi , Simon Tse , Narayan Padi , Alvin Goddard , Aswatnarayan Raghuram
IPC: H04L12/721 , H04L12/723 , H04L12/771 , H04L12/24 , H04L12/803 , H04L12/851 , H04L12/801 , H04L12/715 , H04L12/717 , H04L12/707 , H04L12/703
Abstract: Concepts and technologies disclosed herein are directed to deadlock-free traffic rerouting in software-defined networking (“SDN”) networks. According to one aspect of the concepts and technologies disclosed herein, a centralized SDN controller can determine that a packet flow along a path within at least a portion of a network is to be rerouted from the path to a new path. The centralized SDN controller can initiate a reroute of the packet flow to the new path. The centralized SDN controller can request a bandwidth for the new path. The bandwidth can be determined such that bandwidth oversubscription on the new path is avoided. In response to the packet flow settling on the new path, the centralized SDN controller can adjust a requested bandwidth of the packet flow to a desired value to complete the reroute of the packet flow from the path to the new path.
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公开(公告)号：US10547384B2
公开(公告)日：2020-01-28
申请号：US16022212
申请日：2018-06-28
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Gagan Choudhury , Kathleen Meier-Hellstern , Alvin Goddard , Narayan Padi , Simon Tse , Tzuu-Yi Wang , Kathleen Tse , Martin Birk
Abstract: A software-defined network multi-layer controller (SDN-MLC) may communicate with multiple layers of a telecommunication network. The SDN-MLC may have an optimization algorithm that helps manage, in near real-time, the multiple layers of the telecommunication network.
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公开(公告)号：US10298329B1
公开(公告)日：2019-05-21
申请号：US16022267
申请日：2018-06-28
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Gagan Choudhury , Kathleen Meier-Hellstern , Alvin Goddard , Narayan Padi , Simon Tse
Abstract: A software-defined network multi-layer controller (SDN-MLC) may communicate with multiple layers of a telecommunication network. The SDN-MLC may have an optimization algorithm that helps manage, in near real-time, the multiple layers of the telecommunication network.
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公开(公告)号：US20230370363A1
公开(公告)日：2023-11-16
申请号：US17744274
申请日：2022-05-13
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Narayan Padi , Gagan Choudhury , Alvin C. Goddard , Harpreet Ahluwalia , Aswatnarayan Raghuram
IPC: H04L45/247
CPC classification number: H04L45/247
Abstract: Aspects of the subject disclosure may include, for example, obtaining node data identifying for a network a source node, a destination node and a plurality of other nodes; obtaining reference path data identifying a reference path from the source node to the destination node; obtaining alternate path data identifying a plurality of alternate paths from the source node to the destination node, setting for the reference path a possible split threshold identifying a traffic bandwidth which can trigger a re-direction of traffic from the reference path; determining whether a current traffic flow on the reference path meets the possible split threshold, resulting in a first determination; responsive to the first determination, obtaining, subsequent to the setting for the reference path of the possible split threshold, current alternate path data for each of the plurality of alternate paths, wherein the current alternate path data comprises for each of the alternate paths a respective current alternate path bandwidth availability; responsive to the obtaining of the current alternate path data, determining whether a particular one of the plurality of alternate paths can support carrying of at least some of the current traffic flow on the reference path, resulting in a second determination, wherein the second determination is based at least in part upon the current alternate path bandwidth availability of each of the plurality of alternate paths; and responsive to the second determination, re-directing a portion of the current traffic flow from the reference path to the particular one of the alterative paths. Other embodiments are disclosed.
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公开(公告)号：US20230261967A1
公开(公告)日：2023-08-17
申请号：US17672320
申请日：2022-02-15
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Narayan Padi , Tzuu-Yi Wang , Harpreet Ahluwalia , Gagan Choudhury , Aswatnarayan Raghuram , Alvin C. Goddard , Manu Thannickal , Lynn Rivera , SHESHASHAILAVAS CHINTHAKAYALA
IPC: H04L45/12 , H04L45/42 , H04L43/0882 , H04L43/0817 , H04L12/46
CPC classification number: H04L45/123 , H04L12/4641 , H04L43/0817 , H04L43/0882 , H04L45/42
Abstract: Aspects of the subject disclosure may include, for example, detecting whether a bandwidth capacity loss occurs on a first link bundle connecting one or more first core routers of a core Interior Gateway Protocol (IGP) network with one or more first provider routers, resulting in a detected capacity loss, wherein communication between the one or more first core routers of the core IGP network and the one or more first provider routers utilizes a Border Gateway Protocol (BGP), wherein a second link bundle connects one or more second core routers of the core IGP network with one or more second provider routers, and wherein communication between the one or more second core routers of the core IGP network and one or more second provider routers utilizes the BGP; responsive to the detected capacity loss, automatically increasing a cost associated with selected network traffic that was to be carried between the one or more first provider routers and the one or more first core routers of the core IGP network and that will instead be re-directed for communication via the second link bundle; and causing communication via the second link bundle of the selected network traffic, wherein the communication via the second link bundle of the selected network traffic is between the one or more second provider routers and the one or more second core routers of the core IGP network. Other embodiments are disclosed.
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