公开(公告)号：US20240356645A1

公开(公告)日：2024-10-24

申请号：US18530105

申请日：2023-12-05

申请人： Infinera Corporation

发明人： Steven J. Hand

IPC分类号： H04B10/27 ,  H04J14/02

CPC分类号： H04B10/27 ,  H04J14/0227

摘要： An example system includes a hub transceiver and a plurality of edge transceivers. The hub transceiver is operable to transmit, over a first communications channel, a first message to each of the edge transceivers concurrently, including an indication of available network resources on an optical communications network. Each of the edge transceiver is operable to transmit, transmit, over a second communications channel, a respective second message to the hub transceiver including an indication of a respective subset of the available network resources selected by the edge transceiver for use in communicating over the optical communications network. Further, the edge transceiver is operable to receive, from the hub transceiver, a third message acknowledging receipt of a selection and a fourth message confirming an assignment of the selected subset of the available network resources to the edge transceiver.

公开(公告)号：US11689282B2

公开(公告)日：2023-06-27

申请号：US17368750

申请日：2021-07-06

申请人： Infinera Corporation

发明人： Rajan Rao ,  Steven J. Hand ,  Vasudha Bhaskara

IPC分类号： H04B17/00 ,  H04B10/03 ,  H04B10/077

CPC分类号： H04B10/03 ,  H04B10/0771 ,  H04B10/0773

摘要： An example system includes a transceiver and a microcontroller. The microcontroller is configured to receive, from first and second network interfaces of the transceiver, a plurality of messages from a hub node and the leaf nodes. Each of the messages corresponds to a respective one of the ingress or egress data flows. The microcontroller is also configured generate a resource assignment map based on the messages. The resource assignment map includes pairings between a respective one of the ingress data flows and a respective one of the egress data flows, and, for each of the pairings, an indication of a respective network resource assigned to exchange the egress data flow of that pairing with a respective one of the leaf nodes. The microcontroller is also configured to generate a command to cause the transceiver to transmit the egress data flows in accordance with the resource assignment map.

公开(公告)号：US20220376781A1

公开(公告)日：2022-11-24

申请号：US17561945

申请日：2021-12-25

申请人： Infinera Corporation

发明人： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

IPC分类号： H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04Q11/00 ,  H04B10/2575 ,  H04J99/00

摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

公开(公告)号：US20220376780A1

公开(公告)日：2022-11-24

申请号：US17561805

申请日：2021-12-24

申请人： Infinera Corporation

发明人： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

IPC分类号： H04B7/26 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04B10/69 ,  H04J14/02 ,  H04L1/00 ,  H04L5/00 ,  H04J14/08 ,  H04J14/00 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/40 ,  H04Q11/00 ,  H04B10/2575 ,  H04J99/00

摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

公开(公告)号：US11218220B2

公开(公告)日：2022-01-04

申请号：US16893357

申请日：2020-06-04

申请人： Infinera Corporation

发明人： Steven J. Hand

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04J14/02

摘要： An example system includes a plurality of hub transceivers and a plurality of edge transceivers. A first hub transceiver is operable to determine that the first hub transceiver is configured to assign a first subset of network resources to a first subset of the edge transceivers for communication over an optical communications network, and determine that a second hub transceiver is configured to assign a second subset of network resources to a second subset of the edge transceivers for communication over the optical communications network. The first hub transceiver is also operable to determine that the first subset of network resources overlaps the second subset of network resources, and in response, transmit a notification of the overlap to a control module of the optical communications network.

公开(公告)号：US11088764B2

公开(公告)日：2021-08-10

申请号：US16578169

申请日：2019-09-20

申请人： Infinera Corporation

发明人： Amir Jafari ,  Steven J. Hand ,  Mohamed Osman

IPC分类号： H04B10/00 ,  H04B10/61 ,  H04B10/40 ,  H04J14/02 ,  H04B10/54 ,  H04B10/548 ,  H04B10/50 ,  G02B6/293 ,  H04B10/532 ,  H01S3/067

摘要： Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, a transmitter includes a laser operable to supply an optical signal, a digital signal processor operable to supply first electrical signals based on first data input to the digital signal processor and second data input to the digital signal processor, digital-to-analog conversion circuitry operable to output second electrical signals based on the first electrical signals, modulator driver circuitry is operable to output third electrical signals based on the second electrical signals, and an optical modulator operable to supply first and second modulated optical signals based on the third electrical signals. The first modulated optical signal includes a plurality of optical subcarriers carrying user data. The second modulated optical signal is polarization modulated based on the second data.

公开(公告)号：US20210075536A1

公开(公告)日：2021-03-11

申请号：US16732108

申请日：2019-12-31

申请人： Infinera Corporation

发明人： Steven J. Hand

IPC分类号： H04J14/02 ,  H04B10/548 ,  H04B10/61 ,  H03M1/00 ,  H04L27/20 ,  H04B10/50

摘要： An example node includes a receiver, a switch circuit, and a transmitter. The receiver is configured to receive a first modulated optical signal including a first plurality of optical subcarriers, and supply a plurality of data streams based on the first plurality of optical subcarriers. Each of the data streams is associated with a corresponding one of the plurality of optical subcarriers. The switch circuit is configured to receive the data streams, and supply the data streams to a plurality of switch outputs. The transmitter is configured to receive the data streams, and supply a second modulated optical signal based on the data streams. The second modulated optical signal carries a second plurality of optical subcarriers. Each of the second plurality of optical subcarriers is associated with a corresponding one of the data streams.

公开(公告)号：US11838052B2

公开(公告)日：2023-12-05

申请号：US17561768

申请日：2021-12-24

申请人： Infinera Corporation

发明人： Steven J. Hand

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04J14/02

CPC分类号： H04B10/27 ,  H04J14/0227

摘要： An example system includes a hub transceiver and a plurality of edge transceivers. The hub transceiver is operable to transmit, over a first communications channel, a first message to each of the edge transceivers concurrently, including an indication of available network resources on an optical communications network. Each of the edge transceiver is operable to transmit, transmit, over a second communications channel, a respective second message to the hub transceiver including an indication of a respective subset of the available network resources selected by the edge transceiver for use in communicating over the optical communications network. Further, the edge transceiver is operable to receive, from the hub transceiver, a third message acknowledging receipt of a selection and a fourth message confirming an assignment of the selected subset of the available network resources to the edge transceiver.

公开(公告)号：US11489613B2

公开(公告)日：2022-11-01

申请号：US16893323

申请日：2020-06-04

申请人： Infinera Corporation

发明人： Steven J. Hand

IPC分类号： H04B10/00 ,  H04J14/02 ,  H04L5/00 ,  H04L5/14 ,  H04L1/16

摘要： An example system includes a hub transceiver, a plurality of edge transceivers, and a control module. The control module is operable to receive, from one or more of the edge transceivers or the hub transceiver, telemetry data regarding at least one of a transmission or a receipt of data over the optical communications network, and determine, based on the telemetry data, performance characteristics regarding the optical communications network. Further, the control module is operable to transmit, based on the performance characteristics, a command to one or more of the edge transceivers or the hub transceiver to modify an operation with respect to the optical communications network.

公开(公告)号：US11470019B2

公开(公告)日：2022-10-11

申请号：US16732023

申请日：2019-12-31

申请人： Infinera Corporation

发明人： Steven J. Hand

IPC分类号： H04J14/02 ,  H04Q11/00 ,  H04B10/27 ,  H04L49/15 ,  H04L43/0882 ,  H03M1/00 ,  H04B10/50 ,  H04B10/548 ,  H04B10/61 ,  H04L27/20

摘要： An example system includes a network switch and a plurality of server computers communicatively coupled to the first network switch. The network switch includes a first transceiver configured to transmit data according to a first maximum throughput, and each server computer includes a respective second transceiver configured to transmit data according to a second maximum throughput that is less than the first maximum throughput. The network switch is configured to transmit, using the first transceiver according to the first maximum throughput, first data including a plurality of optical subcarriers to each of the server computers. Each of the server computers is configured to receive, using a respective one of the second transceivers, the first data from the network switch, and extract, from the first data, a respective portion of the first data addressed to the server computer.