中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

24 records (took 0.018 seconds)

    Path selection in optical network for optical nodes with flexible baud rate and modulation format
    11.
    发明授权
    Path selection in optical network for optical nodes with flexible baud rate and modulation format 有权

    公开(公告)号：US10374745B1

    公开(公告)日：2019-08-06

    申请号：US16003352

    申请日：2018-06-08

    Applicant: Cisco Technology, Inc.

    Inventor： Alberto Arnaldo Tanzi ,  Stefano Piciaccia ,  Maurizio Gazzola ,  Lorenzo Ghioni

    IPC: H04J14/00 ,  H04J14/02 ,  H04B10/079 ,  H04Q11/00

    Abstract: A network controller controls optical nodes configured to communicate with each other at multiple line rates using different tuples of [bits/symbol, symbol rate] for each line rate. The network controller determines multiple paths between two optical nodes, selects a desired line rate at which to communicate between the two optical nodes, and accesses a path database that indicates an available optical bandwidth and an available optical signal-to-noise ratio (SNR) along each path. The network controller determines feasible paths among the paths. To do this, the network controller, for each path, searches the different tuples of the desired line rate for a tuple for which a desired optical bandwidth and a desired optical SNR are accommodated by the available optical bandwidth and the available optical SNR of the path, respectively. The network controller programs optical nodes of one of the feasible paths with a tuple found in the searching.

    Optical Switching Architectures for Nodes in WDM Mesh and Ring Networks
    12.
    发明申请
    Optical Switching Architectures for Nodes in WDM Mesh and Ring Networks 审中-公开
    WDM Mesh和Ring网络节点的光交换架构

    公开(公告)号：US20140341573A1

    公开(公告)日：2014-11-20

    申请号：US14445477

    申请日：2014-07-29

    Applicant: Cisco Technology, Inc.

    Inventor： Ornan Gerstel ,  Mauro Macchi ,  Stefano Piciaccia

    IPC: H04Q11/00 ,  H04J14/02

    CPC classification number: H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0216 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286 ,  H04J14/0294 ,  H04J14/0295 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0052 ,  H04Q2011/0081 ,  H04Q2011/0092

    Abstract: Switching architectures for WDM mesh and ring network nodes are presented. In mesh networks, the switching architectures have multiple levels—a network level having wavelength routers for add, drop and pass-through functions, an intermediate level having device units which handle add and drop signals, and a local level having port units for receiving signals dropped from the network and transmitting signals to be added to the network. The intermediate level device units are selected and arranged for performance and cost considerations. The multilevel architecture also permits the design of reconfigurable optical add/drop multiplexers for ring network nodes, the easy expansion of ring networks into mesh networks, and the accommodation of protection mechanisms in ring networks.

    Abstract translation: 介绍了WDM网格和环网节点的交换架构。 在网状网络中，交换架构具有多个级别 - 具有用于添加，丢弃和传递功能的波长路由器的网络级别，具有处理添加和丢弃信号的设备单元的中间级别以及具有用于接收信号的端口单元的本地级 从网络中丢弃并发送要添加到网络的信号。 为了性能和成本考虑，选择和布置中级设备单元。 多层架构还允许为环网节点设计可重配置的光分插复用器，将网络轻松扩展到网状网络中，以及环网中保护机制的适应性。

    Automatic bandwidth optimization for optical networks
    14.
    发明授权
    Automatic bandwidth optimization for optical networks 有权

    公开(公告)号：US10476588B2

    公开(公告)日：2019-11-12

    申请号：US15952345

    申请日：2018-04-13

    Applicant: Cisco Technology, Inc.

    Inventor： Maurizio Gazzola ,  Stefano Piciaccia ,  Lorenzo Ghioni ,  Ronald Johnson ,  Alberto Arnaldo Tanzi ,  Sushin Suresan Adackaconam

    IPC: H04B10/075 ,  H04B10/073 ,  H04J14/02

    Abstract: Techniques for automatic bandwidth optimization of an optical communication channel in an optical network are provided. In one embodiment, a method of automatically optimizing bandwidth includes receiving, at a first optical network element, a first signal transmission transmitted according to a first set of transmission parameters over an optical communication channel established between the first optical network element and a second optical network element. The method includes determining a first quality of signal parameter associated with the first signal transmission and determining whether the first quality of signal parameter is worse than a predetermined quality of signal value. Upon determining that the first quality of signal parameter is not worse than the predetermined value, the method further includes transmitting a second set of transmission parameters to the second optical network element to further optimize the bandwidth of the optical communication channel.

    Optical Switching Architectures for Nodes in WDM Mesh and Ring Networks
    17.
    发明申请
    Optical Switching Architectures for Nodes in WDM Mesh and Ring Networks 有权
    WDM Mesh和Ring网络节点的光交换架构

    公开(公告)号：US20130308946A1

    公开(公告)日：2013-11-21

    申请号：US13870057

    申请日：2013-04-25

    Applicant: Cisco Technology, Inc.

    Inventor： Ornan Gerstel ,  Mauro Macchi ,  Stefano Piciaccia

    IPC: H04J14/02

    CPC classification number: H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0216 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286 ,  H04J14/0294 ,  H04J14/0295 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0052 ,  H04Q2011/0081 ,  H04Q2011/0092

    Abstract: Switching architectures for WDM mesh and ring network nodes are presented. In mesh networks, the switching architectures have multiple levels—a network level having wavelength routers for add, drop and pass-through functions, an intermediate level having device units which handle add and drop signals, and a local level having port units for receiving signals dropped from the network and transmitting signals to be added to the network. The intermediate level device units are selected and arranged for performance and cost considerations. The multilevel architecture also permits the design of reconfigurable optical add/drop multiplexers for ring network nodes, the easy expansion of ring networks into mesh networks, and the accommodation of protection mechanisms in ring networks.

    Abstract translation: 介绍了WDM网格和环网节点的交换架构。 在网状网络中，交换架构具有多个级别 - 具有用于添加，丢弃和传递功能的波长路由器的网络级别，具有处理添加和丢弃信号的设备单元的中间级别以及具有用于接收信号的端口单元的本地级 从网络中丢弃并发送要添加到网络的信号。 为了性能和成本考虑，选择和布置中级设备单元。 多层架构还允许为环网节点设计可重配置的光分插复用器，将网络轻松扩展到网状网络中，以及环网中保护机制的适应性。

    MEASURING FIBER ASYMMETRY
    19.
    发明申请
    MEASURING FIBER ASYMMETRY 有权

    公开(公告)号：US20210211786A1

    公开(公告)日：2021-07-08

    申请号：US17202984

    申请日：2021-03-16

    Applicant: Cisco Technology, Inc.

    Inventor： Gilberto Loprieno ,  Luca Della Chiesa ,  Stefano Binetti ,  Stefano Piciaccia ,  Giovanni Osnago

    IPC: H04Q11/00

    Abstract: A method of obtaining a measure of asymmetry between optical fibers of a forward and reverse paths is provided in order to synchronize clocks of optical nodes connected by asymmetrical optical fiber paths. The method includes receiving, at first and second arrival times, from a first optical network device, a first optical signal transmitted on a first optical fiber and a second optical signal transmitted on a second optical fiber, calculating a first time difference between the second arrival time and the first arrival time. The method includes determining a measure of asymmetry between the first optical fiber and the second optical fiber based on the first time difference and a second time difference between a first time of transmission by the first optical network device of the first optical signal and a second time of transmission by the first optical network device of the second optical signal.

    METHOD AND SYSTEM FOR OPTICAL PATH RESTORATION
    20.
    发明申请
    METHOD AND SYSTEM FOR OPTICAL PATH RESTORATION 审中-公开

    公开(公告)号：US20200336809A1

    公开(公告)日：2020-10-22

    申请号：US16386309

    申请日：2019-04-17

    Applicant: Cisco Technology, Inc.

    Inventor： Randy Zhang ,  Gabriele Maria Galimberti ,  Stefano Piciaccia ,  Mauro Brunella

    IPC: H04Q11/00 ,  H04L12/703 ,  H04L12/707

    Abstract: A method for optical restoration in an optical network is provided. A network controller obtains, from one or more optical nodes of an optical network, at least one failure notification indicating a failure of a primary path between a first node and a second node. The network controller forwards to a first set of optical nodes, data-plane parameters for optical components of the first set of optical nodes. The first set of optical nodes include the first node, the second node, and one or more intermediate nodes, and forms a restoration path for the primary path. The data-plane parameters for the optical components are forwarded in parallel to the first set of optical nodes of the restoration path so as to activate the restoration path in parallel. The network controller switches traffic from the primary path to the restoration path.

Patent Agency Ranking