公开(公告)号：US20190297005A1

公开(公告)日：2019-09-26

申请号：US15927334

申请日：2018-03-21

Applicant: Cisco Technology, Inc.

Inventor： Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Vengada Prasad Govindan ,  Pawel Piotr Sowinski

IPC: H04L12/761 ,  H04L12/707 ,  H04L12/749 ,  H04L12/703 ,  H04L12/723 ,  H04L1/00

Abstract: Multipoint seamless Bi-directional Forwarding Detection (BFD) may be provided. First, a discriminator and data identifying a headend device may be received by a node from the headend device. The discriminator may be received over a point-to-multipoint pseudowire between the node and the headend device. Next, the node may start a reflector session in response to receiving the discriminator. The reflector session may correspond to the discriminator and the data identifying the headend device. The reflector session may then receive a control packet from the headend device and determine that the control packet includes the discriminator. The control packet may be received over the point-to-multipoint pseudowire. Next, the reflector session on the node may send a reply packet to the headend device in response to determining that the control packet includes the discriminator. The reply packet may be sent over a unicast pseudowire between the node and the headend device.

公开(公告)号：US09660774B2

公开(公告)日：2017-05-23

申请号：US14685422

申请日：2015-04-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hang Jin ,  Tong Liu ,  Pawel Piotr Sowinski

IPC: G06F11/00 ,  H01J1/16 ,  H04L1/00 ,  H04L12/26 ,  H04L5/00 ,  H04L27/34 ,  H04B3/54 ,  H04L27/26 ,  H04L12/801 ,  H04L12/807 ,  H04J3/06 ,  H04L12/28

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 determining and managing upstream profiles in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes determining, at a Converged Cable Access Platform (CCAP) core, channel conditions independent of any channel effect over a hybrid fiber coaxial (HFC) network between a remote physical layer (R-PHY) entity coupled to the CCAP core and a cable modem (CM) in the DOCSIS 3.1 network environment, and assigning an upstream profile to the CM based on the channel conditions. In specific embodiments, the channel conditions include signal to noise ratio (SNR), modulation error ratio (MER) or group delay. In some embodiments, assigning the upstream profile includes determining a quadrature amplitude modulation (QAM) order based on the SNR or MER, and determining a pilot pattern based on the group delay, the combination of the QAM order and the pilot pattern identifying the upstream profile.

公开(公告)号：US09692564B2

公开(公告)日：2017-06-27

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: H04L12/28 ,  H04L12/56 ,  H04L5/00 ,  H04L27/34 ,  H04B3/54 ,  H04L27/26 ,  H04L12/801 ,  H04L12/807 ,  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 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.

公开(公告)号：US20140133352A1

公开(公告)日：2014-05-15

申请号：US14076015

申请日：2013-11-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： John T. Chapman ,  Pawel Piotr Sowinski

IPC: H04L12/24 ,  H04L12/851

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：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：US20150295684A1

公开(公告)日：2015-10-15

申请号：US14685422

申请日：2015-04-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hang Jin ,  Tong Liu ,  Pawel Piotr Sowinski

IPC: H04L5/00 ,  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 determining and managing upstream profiles in Data Over Cable Service Interface Specification (DOCSIS) 3.1 network environments is provided and includes determining, at a Converged Cable Access Platform (CCAP) core, channel conditions independent of any channel effect over a hybrid fiber coaxial (HFC) network between a remote physical layer (R-PHY) entity coupled to the CCAP core and a cable modem (CM) in the DOCSIS 3.1 network environment, and assigning an upstream profile to the CM based on the channel conditions. In specific embodiments, the channel conditions include signal to noise ratio (SNR), modulation error ratio (MER) or group delay. In some embodiments, assigning the upstream profile includes determining a quadrature amplitude modulation (QAM) order based on the SNR or MER, and determining a pilot pattern based on the group delay, the combination of the QAM order and the pilot pattern identifying the upstream profile.

Abstract translation: 提供了一种用于确定和管理数据有线服务接口规范（DOCSIS）3.1网络环境中的上行配置文件的示例方法，包括在融合电缆接入平台（CCAP）核心处确定与混合光纤无关的任何信道效应的信道条件 在耦合到CCAP核心的远程物理层（R-PHY）实体和DOCSIS 3.1网络环境中的电缆调制解调器（CM）之间的同轴（HFC）网络，以及基于信道条件向CM分配上行简档。 在具体实施例中，信道条件包括信噪比（SNR），调制误差比（MER）或组延迟。 在一些实施例中，分配上行简档包括基于SNR或MER确定正交幅度调制（QAM）顺序，以及基于组延迟确定导频模式，QAM顺序和识别上游简档的导频模式的组合 。

公开(公告)号：US10536367B2

公开(公告)日：2020-01-14

申请号：US15927334

申请日：2018-03-21

Applicant: Cisco Technology, Inc.

Inventor： Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Vengada Prasad Govindan ,  Pawel Piotr Sowinski

IPC: H04L12/28 ,  H04L12/761 ,  H04L12/707 ,  H04L1/00 ,  H04L12/703 ,  H04L12/723 ,  H04L12/749

Abstract: Multipoint seamless Bi-directional Forwarding Detection (BFD) may be provided. First, a discriminator and data identifying a headend device may be received by a node from the headend device. The discriminator may be received over a point-to-multipoint pseudowire between the node and the headend device. Next, the node may start a reflector session in response to receiving the discriminator. The reflector session may correspond to the discriminator and the data identifying the headend device. The reflector session may then receive a control packet from the headend device and determine that the control packet includes the discriminator. The control packet may be received over the point-to-multipoint pseudowire. Next, the reflector session on the node may send a reply packet to the headend device in response to determining that the control packet includes the discriminator. The reply packet may be sent over a unicast pseudowire between the node and the headend device.

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。