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    MANAGING TIME OFFSET AND FREQUENCY DRIFT IN ASYNCHRONOUS DOCSIS REMOTE PHY NETWORK ENVIRONMENTS
    2.
    发明申请
    MANAGING TIME OFFSET AND FREQUENCY DRIFT IN ASYNCHRONOUS DOCSIS REMOTE PHY NETWORK ENVIRONMENTS 有权
    在异步DOCSIS远程物理网络环境中管理时间偏移和频率干扰

    公开(公告)号：US20150295669A1

    公开(公告)日：2015-10-15

    申请号：US14685403

    申请日：2015-04-13

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： John T. Chapman ,  Yi Tang ,  Lin Su ,  Tong Liu ,  Hang Jin

    IPC: H04J3/06

    CPC classification number: H04L5/0007 ,  H04B3/542 ,  H04J3/0667 ,  H04J3/0673 ,  H04L5/006 ,  H04L12/2801 ,  H04L27/2697 ,  H04L27/3405 ,  H04L27/345 ,  H04L47/12 ,  H04L47/27

    Abstract: An example method for managing time offset and frequency drift in asynchronous Data Over Cable Service Interface Specification (DOCSIS) Remote Physical layer (R-PHY) network environments is provided and includes receiving, at a first hardware device, time synchronization message from a remote second hardware device in the DOCSIS R-PHY network, determining a time difference between a first clock at the first hardware device and a second clock at the second hardware device from the time synchronization message; and re-stamping an event message based on the time difference.

    Abstract translation: 提供了用于在异步数据有线服务接口规范（DOCSIS）远程物理层（R-PHY）网络环境中管理时间偏移和频率漂移的示例性方法，包括在第一硬件设备处接收来自远程秒的时间同步消息 DOCSIS R-PHY网络中的硬件设备，从时间同步消息确定第一硬件设备的第一时钟与第二硬件设备的第二时钟之间的时间差; 并根据时差重新标记事件消息。

    Optical link and coherent receiver noise characterization
    6.
    发明授权
    Optical link and coherent receiver noise characterization 有权

    公开(公告)号：US11489590B1

    公开(公告)日：2022-11-01

    申请号：US17315837

    申请日：2021-05-10

    Applicant: Cisco Technology, Inc.

    Inventor： Jörg Leykauf ,  Sonja Schneider ,  Israa Slim ,  Yi Tang

    IPC: H04B10/079 ,  H04B10/61

    Abstract: Optical signal to noise ratios that more accurately characterize optical link noise are determined. As noise induced by an optical receiver does not generally vary with an input optical signal power, a power of an incoming optical signal is varied at the receiver. A resulting variation in noise measure represents a variation in link noise and does not include any variation caused by receiver noise, as receiver noise does not generally vary with optical signal power. Thus, the contribution of optical link noise can be discerned from other noise induced by the receiver itself. A more accurate characterization of optical link performance is thus provided.

    OPTICAL LINK AND COHERENT RECEIVER NOISE CHARACTERIZATION
    9.
    发明申请
    OPTICAL LINK AND COHERENT RECEIVER NOISE CHARACTERIZATION 有权

    公开(公告)号：US20220360328A1

    公开(公告)日：2022-11-10

    申请号：US17315837

    申请日：2021-05-10

    Applicant: Cisco Technology, Inc.

    Inventor： Jörg Leykauf ,  Sonja Schneider ,  Israa Slim ,  Yi Tang

    IPC: H04B10/079 ,  H04B10/61

    Abstract: Optical signal to noise ratios that more accurately characterize optical link noise are determined. As noise induced by an optical receiver does not generally vary with an input optical signal power, a power of an incoming optical signal is varied at the receiver. A resulting variation in noise measure represents a variation in link noise and does not include any variation caused by receiver noise, as receiver noise does not generally vary with optical signal power. Thus, the contribution of optical link noise can be discerned from other noise induced by the receiver itself. A more accurate characterization of optical link performance is thus provided.

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