公开(公告)号：US20170019146A1

公开(公告)日：2017-01-19

申请号：US15052499

申请日：2016-02-24

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hang Jin ,  John T. Chapman

IPC: H04B3/32 ,  H04B1/10 ,  H04B1/04

CPC classification number: H04B3/32 ,  H04B1/0475 ,  H04B1/10 ,  H04B3/20 ,  H04B3/487

Abstract: An example method for interference suppression in full duplex cable network environments is provided and includes providing a baseband (BB) reference signal on a first pathway to a signal processor, converting the BB reference signal to a first radio frequency (RF) signal, transmitting the first RF signal on the first pathway, the first RF signal being reflected back on a second pathway, receiving a second RF signal on the second pathway, the second RF signal including interferences from the reflections, generating an RF reference signal based on signals on the first pathway, providing the RF reference signal to the signal processor, providing the second RF signal to the signal processor, and reducing, by the signal processor, interferences in the second RF signal from reflections of the first RF signal based on the BB reference signal and the RF reference signal.

Abstract translation: 提供了一种用于全双工有线网络环境中的干扰抑制的示例方法，包括在信号处理器的第一路径上提供基带（BB）参考信号，将BB参考信号转换为第一射频（RF）信号， 第一RF信号在第一路径上反射，第一RF信号被反射回第二路径，在第二路径上接收第二RF信号，第二RF信号包括来自反射的干扰，基于信号产生RF参考信号 第一路径，将RF参考信号提供给信号处理器，向信号处理器提供第二RF信号，并且由信号处理器减少基于BB参考信号的第一RF信号的反射对第二RF信号的干扰 和RF参考信号。

公开(公告)号：US20160366052A1

公开(公告)日：2016-12-15

申请号：US15096746

申请日：2016-04-12

Applicant: CISCO TECHNOLOGY, INC.

Inventor： John T. Chapman ,  Carlos M. Pignataro ,  Alon Bernstein ,  Stefano B. Previdi

IPC: H04L12/723 ,  H04L29/06 ,  H04L12/721

CPC classification number: H04L45/50 ,  H04L45/66

Abstract: An example system and method for facilitating communication with segment routing in a cable modem network environment is provided and includes receiving, at a remote physical device (RPD) in a network, a PW control packet including segment routing information including a PW segment identifier (PW SID) for establishing a data session between the RPD and a network element over a packet switched network, the PW SID indicative of a segment in the packet switched network to be used for communicating PW data packets of the data session, the PW control packet and the PW data packets being emulations of a point-to-point connection between the RPD and the network element, and writing into a segment table of the RPD a mapping between the PW SID and the data session. In specific embodiments, the network element comprises a Converged Cable Access Platform (CCAP) Core of a cable network.

Abstract translation: 提供一种用于在电缆调制解调器网络环境中促进与段路由通信的示例系统和方法，包括在网络中的远程物理设备（RPD）处接收包括段路由信息的PW控制分组，所述PW控制分组包括PW分段标识符（PW SID），用于通过分组交换网络在RPD和网元之间建立数据会话，PW SID表示分组交换网络中用于传送数据会话的PW数据分组的分段，PW控制分组和 PW数据包是RPD与网元之间的点到点连接的仿真，PWD和数据会话之间的映射写入到RPD的分段表中。 在具体实施例中，网络元件包括电缆网络的融合电缆接入平台（CCAP）核心。

公开(公告)号：US09237084B2

公开(公告)日：2016-01-12

申请号：US14076045

申请日：2013-11-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： John T. Chapman

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 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：US20150295746A1

公开(公告)日：2015-10-15

申请号：US14685452

申请日：2015-04-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： John T. Chapman ,  Jiening Ao ,  Brian Patrick Bresnahan ,  Pawel Piotr Sowinski ,  Lin Su

IPC: H04L27/26 ,  H04B3/54 ,  H04L27/34

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 Downstream External Physical Interface (DEPI) in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes generating, at a Converged Cable Access Platform (CCAP) core, a DEPI-Packet Streaming Protocol (PSP) pseudo-wire (PW) packet including a PSP sub-layer header having a same length for a Quadrature Amplitude Modulation (QAM) channel and an Orthogonal Frequency-Division Multiplexing (OFDM) channel in the DOCSIS network environment, and transmitting the DEPI-PSP PW packet over a DEPI interface to a remote physical layer (R-PHY) entity.

Abstract translation: 提供了一种在电缆数据服务接口规范（DOCSIS）3.1网络环境中的下行外部物理接口（DEPI）的示例方法，包括在聚合有线接入平台（CCAP）核心生成DEPI分组流协议（PSP） 伪线（PW）分组，其包括在DOCSIS网络环境中具有用于正交幅度调制（QAM）信道和正交频分复用（OFDM））信道的相同长度的PSP子层报头，并且发送DEPI-PSP PW分组通过DEPI接口连接到远程物理层（R-PHY）实体。

公开(公告)号：US20150180726A1

公开(公告)日：2015-06-25

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 ,  H04L12/28 ,  H04B10/27

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.

Abstract translation: 示例实施例中的方法可以包括轮询有线网络中的第一电缆调制解调器，并且从第一电缆调制解调器接收识别第一电缆调制解调器检测到的下行频率的第一响应消息。 该方法还包括确定下行频率在至少两个光纤节点之间被分割并且确定电缆调制解调器终端系统（CMTS）服务组拓扑，其中拓扑包括至少两个光纤节点。 在具体实施例中，确定下行频率被拆分基于至少来自第一电缆调制解调器的第一响应消息和来自第二电缆调制解调器的第二响应消息。 在更具体的实施例中，该方法包括至少基于第一和第二响应消息来构建有线网络的混合光纤同轴（HFC）拓扑图，其中HFC拓扑图指示CMTS服务组拓扑。

公开(公告)号：US11252742B2

公开(公告)日：2022-02-15

申请号：US16871087

申请日：2020-05-11

Applicant: Cisco Technology, Inc.

Inventor： Jennifer Andreoli-Fang ,  John T. Chapman

IPC: H04W72/12 ,  H04L12/46 ,  H04L12/28 ,  H04W28/02 ,  H04W84/04

Abstract: One embodiment is a method and includes receiving at a termination element of a first network a bandwidth report (“BWR”), in which the BWR includes information regarding a data transmission opportunity over a second network for at least one endpoint data; scheduling a first network transmission opportunity for the at least one endpoint data using information derived from the received BWR; and receiving from a first network forwarding device the at least one endpoint data in accordance with the scheduled first network transmission opportunity.

公开(公告)号：US20200351935A1

公开(公告)日：2020-11-05

申请号：US16864888

申请日：2020-05-01

Applicant: Cisco Technology, Inc.

Inventor： John T. Chapman ,  Jennifer Andreoli-Fang

IPC: H04W72/14 ,  H04W72/12

Abstract: A transport interface message protocol may be provided. First, a message may be created. The message may comprise data that describes multiple transmissions over an interface that follow a pattern. Then the message may be sent to a computing device. The computing device may provide grants for transmission of the multiple transmissions over a transport network based upon the message.

公开(公告)号：US10797750B2

公开(公告)日：2020-10-06

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 ,  H04L12/28

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：US20200275464A1

公开(公告)日：2020-08-27

申请号：US16871087

申请日：2020-05-11

Applicant: Cisco Technology, Inc.

Inventor： Jennifer Andreoli-Fang ,  John T. Chapman

IPC: H04W72/12 ,  H04L12/46 ,  H04L12/28 ,  H04W28/02 ,  H04W84/04

Abstract: One embodiment is a method and includes receiving at a termination element of a first network a bandwidth report (“BWR”), in which the BWR includes information regarding a data transmission opportunity over a second network for at least one endpoint data; scheduling a first network transmission opportunity for the at least one endpoint data using information derived from the received BWR; and receiving from a first network forwarding device the at least one endpoint data in accordance with the scheduled first network transmission opportunity.

公开(公告)号：US10720961B2

公开(公告)日：2020-07-21

申请号：US15943982

申请日：2018-04-03

Applicant: Cisco Technology, Inc.

Inventor： Hang Jin ,  John T. Chapman

IPC: H04B3/23 ,  H04L12/28 ,  H04L5/14

Abstract: Echo cancellation may be provided. First, a feedback signal corresponding to a plurality of downstream paths may be received. Next, during an upstream silence period, a sample of a combination upstream signal may be received comprising a combination of upstream signals from a plurality of upstream paths. An echo correcting signal may then be created using the received feedback signal and the received sample of the combination upstream signal. Downstream echoes may be cancel from the combination upstream signal based on the created echo correcting signal.