公开(公告)号：US20170244445A1

公开(公告)日：2017-08-24

申请号：US15352445

申请日：2016-11-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hang Jin ,  John T. Chapman

IPC: H04B3/23 ,  H04L5/14

Abstract: An example apparatus for supporting digital pre-distortion (DPD) and full duplex (FDX) in cable network environments is provided and includes a first path for signals being transmitted out of the apparatus, a second path for signals being received into the apparatus, a DPD actuator located on the first path, an amplifier located on the first path, an echo cancellation (EC) actuator located on the second path, and a data interface including a plurality of channels connecting the apparatus to a signal processor. DPD coefficients, EC coefficients and delay parameters are provided over the data interface from the signal processor to the apparatus. The DPD actuator predistorts signals on the first path using the DPD coefficients compensating for distortions introduced by the amplifier, and the EC actuator reduces interferences in signals on the second path using the EC coefficients and the delay parameters, facilitating FDX communication by the apparatus.

公开(公告)号：US09641354B2

公开(公告)日：2017-05-02

申请号：US15047767

申请日：2016-02-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Alon Bernstein ,  John T. Chapman ,  Rundong Huang ,  Sangeeta Ramakrishnan ,  Charles J. Duffy

IPC: H04L1/00 ,  H04L12/46 ,  H04L12/24 ,  H04L12/803 ,  G06F9/455 ,  H04L12/741 ,  H04L29/08 ,  H04L29/06

CPC classification number: H04L12/4633 ,  G06F9/45558 ,  G06F2009/45583 ,  G06F2009/45595 ,  H04L41/0672 ,  H04L41/0816 ,  H04L41/0843 ,  H04L45/745 ,  H04L47/125 ,  H04L67/10 ,  H04L69/22 ,  H04L69/324

Abstract: A method, a system, and an apparatus provide for a cable modem termination system (CMTS). The CMTS may include a virtual machine configured to provide a plurality of virtual CMTSs (vCMTSs). The CMTS may also include a plurality of subscriber groups. Each subscriber group of the plurality of subscriber groups may be assigned to a vCMTS of the plurality of vCMTSs. Additionally, each vCMTS is configured to provide a process.

公开(公告)号：US20170019242A1

公开(公告)日：2017-01-19

申请号：US15052542

申请日：2016-02-24

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hang Jin ,  John T. Chapman

IPC: H04L5/14 ,  H04B3/20

CPC classification number: H04L5/1461 ,  H04B3/20 ,  H04B3/32 ,  H04B3/487 ,  H04L12/2801

Abstract: An example method for characterizing interference relationships in full duplex cable network environments is provided and includes generating a global interfered list for a plurality of cable modems in the cable network and for a plurality of frequency ranges, generating a global interfering list for the plurality of cable modems and for the plurality of frequency ranges, assigning respective downstream reception frequency ranges and upstream transmission frequency ranges for the plurality of cable modems based on the global interfered list and the global interfering list, and transmitting to the cable modems corresponding assignment information comprising the respective assigned downstream reception frequency ranges and upstream transmission frequency ranges.

Abstract translation: 提供了用于表征全双工有线网络环境中的干扰关系的示例性方法，并且包括为有线网络中的多个电缆调制解调器和多个频率范围生成全局干扰列表，为多个电缆生成全局干扰列表 调制解调器和多个频率范围，基于全局受干扰列表和全局干扰列表分配多个电缆调制解调器的各个下行接收频率范围和上行传输频率范围，并向电缆调制解调器发送包括相应的 分配的下行接收频率范围和上行传输频率范围。

公开(公告)号：US20160328252A1

公开(公告)日：2016-11-10

申请号：US14807728

申请日：2015-07-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Amit Singh ,  John T. Chapman ,  Alon Bernstein

IPC: G06F9/455 ,  H04L12/46 ,  H04L12/28

CPC classification number: G06F9/455 ,  G06F9/45558 ,  G06F2009/45562 ,  G06F2009/4557 ,  H04L12/2801 ,  H04L12/4633

Abstract: An example system and method for facilitating virtual cable modem termination system (VCMTS) migration in cable modem network environments is provided and includes spawning, by an orchestration component executing using a processor, a first instance of a virtual network function (VNF) on a first server in a cable modem network, storing state of the first instance as state information in an external database, spawning a second instance of the VNF on a different second server, synchronizing state of the second instance with the state information stored in the external database, and deleting the first instance. In specific embodiments, the VNF comprises a VCMTS.

Abstract translation: 提供了一种用于促进电缆调制解调器网络环境中的虚拟电缆调制解调器终端系统（VCMTS）迁移的示例性系统和方法，包括通过使用处理器执行的业务流程组件的产生，第一实例的虚拟网络功能（VNF） 服务器，将第一实例的状态作为状态信息存储在外部数据库中，在不同的第二服务器上生成VNF的第二实例，将第二实例的状态与存储在外部数据库中的状态信息同步， 并删除第一个实例。 在具体实施例中，VNF包括VCMTS。

公开(公告)号：US09419862B2

公开(公告)日：2016-08-16

申请号：US14632474

申请日：2015-02-26

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rajiv Asati ,  Alon Bernstein ,  John T. Chapman

IPC: H04L12/24 ,  H04B10/27 ,  H04L12/28 ,  H04B3/46

CPC classification number: H04L41/12 ,  H04B3/46 ,  H04B10/27 ,  H04L12/2801 ,  H04L41/0853

Abstract: A method in an example embodiment can include polling a first cable modem in a cable network and receiving a first response message from the first cable modem identifying a downstream frequency detected by the first cable modem. The method further includes determining the downstream frequency is split between at least two fiber nodes and determining a cable modem termination system (CMTS) service group topology, where the topology includes the at least two fiber nodes. In specific embodiments, determining that the downstream frequency is split is based on at least the first response message from the first cable modem and a second response message from a second cable modem. In more specific embodiments, the method includes constructing a hybrid fiber-coaxial (HFC) topology map of the cable network based on at least the first and second response messages, where the HFC topology map indicates the CMTS service group topology.

公开(公告)号：US20160087756A1

公开(公告)日：2016-03-24

申请号：US14958083

申请日：2015-12-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： John T. Chapman

IPC: H04L1/00 ,  H03M13/00 ,  H04L27/12

CPC classification number: H04L1/0041 ,  H03M13/618 ,  H04L27/12 ,  H04L41/0806 ,  H04L41/0816 ,  H04L41/0893 ,  H04L43/50 ,  H04L47/2483 ,  H04L69/323

Abstract: A method is provided in one example and includes creating a plurality of profiles that describe one or more downstream modulations for each data-subcarrier in a channel to be used by a plurality of cable modems; receiving at least one testing measurement from the plurality of cable modems; and assigning a selected one of the plurality of profiles to each of the plurality of cable modems based, at least in part, on the one testing measurement that was received.

Abstract translation: 在一个示例中提供了一种方法，并且包括创建多个简档，其描述将被多个电缆调制解调器使用的信道中的每个数据子载波的一个或多个下行调制; 从所述多个电缆调制解调器接收至少一个测试测量; 以及至少部分地基于所接收的一个测试测量，将所述多个简档中的所选择的一个配置文件分配给所述多个电缆调制解调器中的每一个。

公开(公告)号：US09246788B2

公开(公告)日：2016-01-26

申请号：US14076015

申请日：2013-11-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： John T. Chapman ,  Pawel Piotr Sowinski

IPC: H04L1/00 ,  H04L12/26 ,  H04L12/24 ,  H04L12/851 ,  H04L29/08

CPC classification number: H04L1/0041 ,  H03M13/618 ,  H04L27/12 ,  H04L41/0806 ,  H04L41/0816 ,  H04L41/0893 ,  H04L43/50 ,  H04L47/2483 ,  H04L69/323

Abstract: A method is provided in one example and includes segmenting a plurality of cable modems into a plurality of groups; identifying traffic being received or transmitted by each of the plurality of cable modems that is below a threshold; and determining whether to move each of the plurality of cable modems into a low-power mode based, at least in part, on the traffic being received or transmitted by each of the plurality of cable modems.

Abstract translation: 在一个示例中提供了一种方法，并且包括将多个电缆调制解调器分割成多个组; 识别由所述多个电缆调制解调器中的每一个接收或发送的低于阈值的业务; 以及至少部分地基于由所述多个电缆调制解调器中的每一个接收或发送的业务来确定是否将所述多个电缆调制解调器中的每一个移动到低功率模式。

公开(公告)号：US20150334467A1

公开(公告)日：2015-11-19

申请号：US14807461

申请日：2015-07-23

Applicant: Cisco Technology, Inc.

Inventor： John T. Chapman

IPC: H04N21/61 ,  H04L12/24 ,  H04N21/647 ,  H04N21/222 ,  H04N21/258 ,  H04N21/643 ,  H04L12/28 ,  H04L29/12

CPC classification number: H04L41/0803 ,  H04L12/2801 ,  H04L12/2863 ,  H04L61/2015 ,  H04N21/2221 ,  H04N21/25816 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/64322 ,  H04N21/64707

Abstract: An access point that supports downstream and upstream communication from and to a Modular Cable Modem Termination System (M-CMTS) core to and from customer premises equipment (CPE), respectively, implements an Upstream External PHY Interface (UEPI) protocol with the M-CMTS core for control of the upstream communication. The access point receives from the M-CMTS core first UEPI control messages comprising information to configure one or more pathways with the access point for data plane upstream communication and control plane communication. The access point transmits to the M-CMTS core second UEPI control messages including a spectrum management message to manage upstream spectrum between the access point and the M-CMTS core, and a range request message to request ranging information so that the CPE can transmit upstream packets within an upstream timeslot, wherein at least one second UEPI control message is forwarded from the (CPE).

Abstract translation: 分别支持来自和来自客户驻地设备（CPE）的模块化有线调制解调器终端系统（M-CMTS）核心的下行和上行通信的接入点实现与M-CMTS的上行外部PHY接口（UEPI）协议， CMTS核心用于控制上游通信。 接入点从M-CMTS核心接收包含信息的第一UEPI控制消息，以配置与数据平面上游通信和控制平面通信的接入点的一个或多个路径。 接入点向M-CMTS核心发送包括频谱管理消息的M-CMTS核心第二UEPI控制消息，以管理接入点和M-CMTS核心之间的上行频谱，以及范围请求消息，以请求测距信息，使得CPE可以向上游发送 在上行时隙内的分组，其中至少一个第二UEPI控制消息从（CPE）转发。

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。

公开(公告)号：US20150207579A1

公开(公告)日：2015-07-23

申请号：US14672961

申请日：2015-03-30

Applicant: Cisco Technology, Inc.

Inventor： John T. Chapman ,  Rakesh Chopra ,  Laurent Montini ,  Michael Overcash

IPC: H04J3/06

CPC classification number: H04J3/0661 ,  H04J3/0667 ,  H04J3/0682 ,  H04J3/0688 ,  H04J13/16 ,  H04L1/004 ,  H04L7/033 ,  H04L7/048 ,  H04L12/2801

Abstract: An accurate non-Data Over Cable Service Interface Specification (non-DOCSIS) clock signal is generated at the downstream output of a DOCSIS network. In one example method, a downstream DOCSIS Timing Protocol (DTP) client in the DOCSIS network is frequency synchronized to an upstream DTP server in the DOCSIS network. DOCSIS timing information, along with one or more timing correction factors received at the DTP client, is used to time synchronize the DTP client to the DTP server. Based on the time and frequency synchronization between the DTP server and the DTP client, the clock signal is generated at the output of the DTP client in accordance with the non-DOCSIS timing protocol.

Abstract translation: 在DOCSIS网络的下游输出端产生精确的非数据有线服务接口规范（非DOCSIS）时钟信号。 在一个示例性方法中，DOCSIS网络中的下游DOCSIS定时协议（DTP）客户端与DOCSIS网络中的上游DTP服务器频率同步。 DOCSIS定时信息连同在DTP客户端接收的一个或多个定时校正因子被用于将DTP客户端与DTP服务器进行时间同步。 根据DTP服务器与DTP客户端之间的时间和频率同步，根据非DOCSIS定时协议在DTP客户端的输出端生成时钟信号。