公开(公告)号：US20160112734A1

公开(公告)日：2016-04-21

申请号：US14864610

申请日：2015-09-24

Applicant: Cable Television Laboratories, Inc.

Inventor： Thomas H. Williams ,  David Hunter

IPC: H04N21/24 ,  H04N21/647 ,  H04N21/61 ,  H04N21/442

CPC classification number: H04H20/78 ,  H04H20/12 ,  H04L1/004 ,  H04L1/0057 ,  H04N7/102 ,  H04N21/442 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/64738

Abstract: Systems and methods presented herein provide for isolating an upstream noise source in a cable television network. In one embodiment, a cable television network is communicatively coupled to a plurality of CPEs through a node. The cable television network comprises a CMTS with a CPE polling module and a noise monitor communicatively coupled to the CMTS through the node of the cable television network. The noise monitor is operable in a band of frequencies unused by the CPEs for upstream communications to determine when noise in the band breaches a threshold level, and to indicate when the noise breaches the threshold level to the CPE polling module. The CPE polling module then polls each of the CPEs to retrieve transmit power levels and locations of the CPEs, and identifies the first CPE with the intermittently noisy connection based on the retrieved transmit power level and location of the first CPE.

Abstract translation: 本文提出的系统和方法提供用于隔离有线电视网络中的上游噪声源。 在一个实施例中，有线电视网络通过节点通信地耦合到多个CPE。 有线电视网络包括具有CPE轮询模块的CMTS和通过有线电视网络的节点通信地耦合到CMTS的噪声监视器。 噪声监测器可在用于上行通信的CPE未使用的频带中操作，以确定频带中的噪声何时违反阈值水平，以及指示噪声何时将阈值水平破坏到CPE轮询模块。 CPE轮询模块然后轮询每个CPE以检索CPE的发射功率电平和位置，并且基于检索的第一CPE的发射功率电平和位置来识别具有间歇性噪声连接的第一CPE。

公开(公告)号：US09729257B2

公开(公告)日：2017-08-08

申请号：US14864610

申请日：2015-09-24

Applicant: Cable Television Laboratories, Inc.

Inventor： Thomas H. Williams ,  David Hunter

IPC: H04N7/173 ,  H04H20/78 ,  H04L1/00 ,  H04N7/10 ,  H04N21/442 ,  H04N21/647 ,  H04H20/12 ,  H04N21/61

CPC classification number: H04H20/78 ,  H04H20/12 ,  H04L1/004 ,  H04L1/0057 ,  H04N7/102 ,  H04N21/442 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/64738

Abstract: Systems and methods presented herein provide for isolating an upstream noise source in a cable television network. In one embodiment, a cable television network is communicatively coupled to a plurality of CPEs through a node. The cable television network comprises a CMTS with a CPE polling module and a noise monitor communicatively coupled to the CMTS through the node of the cable television network. The noise monitor is operable in a band of frequencies unused by the CPEs for upstream communications to determine when noise in the band breaches a threshold level, and to indicate when the noise breaches the threshold level to the CPE polling module. The CPE polling module then polls each of the CPEs to retrieve transmit power levels and locations of the CPEs, and identifies the first CPE with the intermittently noisy connection based on the retrieved transmit power level and location of the first CPE.