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

IPC: H04W28/16 ,  H04W24/08 ,  H04W88/12 ,  H04W88/08

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.

公开(公告)号：US10686544B2

公开(公告)日：2020-06-16

申请号：US16135844

申请日：2018-09-19

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Martin Birk ,  David Frederick Lynch ,  Gaurav Thakur ,  Simon Tse

IPC: H04J14/00 ,  H04J14/02 ,  H04L12/751 ,  H04B10/079 ,  H04B10/00

Abstract: Devices, computer-readable media and methods are disclosed for selecting paths in reconfigurable optical add/drop multiplexer (ROADM) networks using machine learning. In one example, a method includes defining a feature set for a proposed path through a wavelength division multiplexing network, wherein the proposed path traverses at least one link in the network, and wherein the at least one link connects a pair of reconfigurable optical add/drop multiplexers, predicting an optical performance of the proposed path, wherein the predicting employs a machine learning model that takes the feature set as an input and outputs a metric that quantifies predicted optical performance, and determining whether to deploy a new wavelength on the proposed path based on the predicted optical performance of the proposed path.

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.

公开(公告)号：US20190190814A1

公开(公告)日：2019-06-20

申请号：US15845335

申请日：2017-12-18

Applicant: AT&T Intellectual Property I, L.P. ,  Cornell University

Inventor： Shih-Hao Tseng ,  Ao Tang ,  Simon Tse ,  Gagan Choudhury

IPC: H04L12/755 ,  H04L12/715 ,  H04L12/703 ,  H04L12/741

CPC classification number: H04L45/021 ,  H04L45/28 ,  H04L45/42 ,  H04L45/44 ,  H04L45/54 ,  H04L45/56 ,  H04L45/64

Abstract: Concepts and technologies disclosed herein are directed to routing stability in a hybrid software-defined networking (“SDN”) network in which control plane functionality is shared between a centralized SDN controller and a plurality of local routers. The controller can collect data plane messages from the plurality of local routers, extract information corresponding to source nodes and edges of a graph representative of the hybrid SDN network, and store the information as entries in a table. The controller can identify any outdated entries and remove any outdated entries from the table. The controller can obtain recovered information missing from the information collected from the data plane messages. The controller also can calculate an effective capacity of the edges. The controller can then generate a stable routing pattern based upon the recovered information and the effective capacity. The controller can deploy the stable routing pattern in the hybrid SDN network.

公开(公告)号：US12047295B2

公开(公告)日：2024-07-23

申请号：US17501372

申请日：2021-10-14

Applicant: AT&T Intellectual Property I, L.P. ,  The Trustees of Princeton University

Inventor： Yaron Koral ,  Simon Tse ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Jennifer L. Rexford ,  Xiaoqi Chen ,  Shir Landau Feibish

IPC: H04L47/11 ,  H04L43/062 ,  H04L43/16 ,  H04L47/125 ,  H04L47/2483 ,  H04L47/32

CPC classification number: H04L47/11 ,  H04L43/062 ,  H04L43/16 ,  H04L47/125 ,  H04L47/2483 ,  H04L47/32

Abstract: Systems, methods, and apparatuses provide a scalable framework for analyzing queuing and transient congestion in network switches. The system reports which flows contributed to the queue buildup and enables direct per-packet action in the data plane to prevent transient congestion. The system may be configured to analyze queuing in legacy network switches.

公开(公告)号：US11336545B2

公开(公告)日：2022-05-17

申请号：US17021224

申请日：2020-09-15

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Steven A. Monetti ,  Tzuu-Yi Wang ,  Richard Koch ,  Tuan Duong ,  Yaron Koral ,  Kenneth Duell ,  Kathleen Meier-Hellstern ,  Simon Tse

IPC: H04L12/26 ,  G06F9/455 ,  H04L29/08 ,  H04L12/935 ,  H04L12/825 ,  H04L12/801 ,  H04L43/062 ,  H04L43/067 ,  H04L43/16 ,  H04L43/106 ,  H04L43/065 ,  H04L43/0894 ,  H04L67/1097 ,  H04L49/00 ,  H04L47/25 ,  H04L47/11 ,  H04L47/12

Abstract: A system for network device measurements may use a white box to perform measurements that may help determine the likelihood of network anomalies, such as microbursts.

公开(公告)号：US11025519B2

公开(公告)日：2021-06-01

申请号：US16380484

申请日：2019-04-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Yaron Koral ,  Tuan Duong ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Simon Tse ,  Shir Landau Feibish ,  Jennifer Rexford ,  Xiaoqi Chen

IPC: H04L12/26

Abstract: Methods, systems, and computer-readable media for measuring packet delays are provided. An input port of a network device is tapped to duplicate an input packet stream having a first packet. An output port of the network device is tapped to duplicate an output packet stream including the first packet. The duplicated input packet stream and the duplicated output packet stream is transmitted to a programmable device. The first packet in the first input packet stream is matched to the first packet in the first output packet stream. An arrival time and a departure time for the first packet is measured. The difference between the departure time of the first packet and the arrival time of the first packet is determined and the value is reported to an external collector.

公开(公告)号：US20200328956A1

公开(公告)日：2020-10-15

申请号：US16380484

申请日：2019-04-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Yaron Koral ,  Tuan Duong ,  Steven A. Monetti ,  Tzuu-Yi Wang ,  Simon Tse ,  Shir Landau Feibish ,  Jennifer Rexford ,  Xiaoqi Chen

IPC: H04L12/26

Abstract: Methods, systems, and computer-readable media for measuring packet delays are provided. An input port of a network device is tapped to duplicate an input packet stream having a first packet. An output port of the network device is tapped to duplicate an output packet stream including the first packet. The duplicated input packet stream and the duplicated output packet stream is transmitted to a programmable device. The first packet in the first input packet stream is matched to the first packet in the first output packet stream. An arrival time and a departure time for the first packet is measured. The difference between the departure time of the first packet and the arrival time of the first packet is determined and the value is reported to an external collector.

公开(公告)号：US20200313788A1

公开(公告)日：2020-10-01

申请号：US16902197

申请日：2020-06-15

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Martin Birk ,  David Frederick Lynch ,  Gaurav Thakur ,  Simon Tse

IPC: H04J14/02 ,  H04L12/751 ,  H04B10/079

Abstract: Devices, computer-readable media and methods are disclosed for selecting paths in reconfigurable optical add/drop multiplexer (ROADM) networks using machine learning. In one example, a method includes defining a feature set for a proposed path through a wavelength division multiplexing network, wherein the proposed path traverses at least one link in the network, and wherein the at least one link connects a pair of reconfigurable optical add/drop multiplexers, predicting an optical performance of the proposed path, wherein the predicting employs a machine learning model that takes the feature set as an input and outputs a metric that quantifies predicted optical performance, and determining whether to deploy a new wavelength on the proposed path based on the predicted optical performance of the proposed path.

公开(公告)号：US10784963B2

公开(公告)日：2020-09-22

申请号：US16291169

申请日：2019-03-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Gagan Choudhury ,  Simon Tse ,  Kathleen Meier-Hellstern ,  Narayan Padi ,  Richard Koch

IPC: H04B10/27 ,  H04L12/24 ,  H04Q11/00 ,  H04J14/02

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 in capacity planning of the telecommunications based on the management of multiple layers of the telecommunication network.