Leakage Detection in a High-Split World: Industry Progress Toward a Viable Solution (2021)

By Rex Coldren, Vecima; Michael Cooper, Cox Communications; Greg Tresness, Arcom Digital

System leakage monitoring and detection in a Low-Split and Mid-Split world involves detecting leakage of transmissions originating from a CMTS, CCAP, R-MACPHY node and R-PHY node. Legacy methods for accomplishing this have been in place for many years and are well-understood.

In Low and Mid-Split scenarios, the aeronautical band from 108 MHz to 137 MHz lies within the downstream spectral band. With DOCSIS® 3.1 High-Split and DOCSIS 4.0 Ultra-High Split, the aeronautical band will fall within the upstream spectral band. As a result, system leakage monitoring and detection in High-Split and Ultra-High Split scenarios involves detecting leakage of transmissions that originate from a cable modem (CM). This requires a completely new way of approaching the problem.

The cable industry has made significant recent progress analyzing the alternatives available to solve the High-Split and Ultra-High Split leakage detection problem, specifying the necessary support in industry standards, and validating in laboratory and controlled outdoor environments. This paper discusses the progress that has been made on the most promising of these alternatives which has now become part of the DOCSIS 3.1 specifications.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Leakage in a High Split World: Detecting and Measuring Upstream Leakage Levels in a One Gpbs Symmetrical High Split Hybrid Fiber Coax Network
By John Chrostowski, Benny Lewandowski & Dan Rice, Comcast; Greg Tresness, Arcom Digital, LLC.
Leakage Detection In Full Duplex DOCSIS - Identification and Measurement of Leakage Levels in a Multigigabit Symmetrical Full Duplex DOCSIS Network
By Benny Lewandowski, Comcast; Greg Tresness, Arcom Digital, LLC.; Jon-En Wang, Comcast
Follow the Yellow Brick Road: From Integrated CCAP or CCAP + Remote PHY to FMA with Remote MACPHY
By Colin Howlett, Rex Coldren & Douglas Johnson, Vecima; Jeff Finkelstein, Cox Communications
To High Split & Beyond: The New Frontier in Leakage Detection
By Kyle Hohman, Shaw Communications
The Road to 10G: Migrating Today’s HFC Network to Meet Tomorrow’s Demand
By Mike Cooper, David Job & Bill Wall, Cox Communications
Preparations for Deploying & Lessons Learned from Deploying High Split (204 MHz) on I-CCAP, R-PHY, & R-MACPHY - High Split as a Steppingstone Towards DOCSIS® 4.0
By Craig Coogan, CommScope, Inc.; Jamie Brown, Shaw Communications, Inc.; Zoran Maricevic, Ph. D., CommScope, Inc.
Turbocharging DOCSIS 3.1 Technology: An Incremental Step on the Way to DOCSIS 4.0
By Colin Howlett, Vecima; Jay Rolls, Broadband Success Partners
Leakage Detection Using Test Signal Phase with GPS
By Thomas H. Williams and Colin Justis, Cable Television Laboratories, Inc.
Remote Diagnosis of Adjacent Channel Interference in a High-Split System
By Lei Zhou, Charter Communications
Cable and Mobile Convergence: A Vision from the Cable Communities Around the World
By Jennifer Andréoli-Fang, PhD, CableLabs; John T. Chapman, Ian Campbell, & Mark Grayson, Cisco; Ahmed Bencheikh, Praveen Srivastava & Vikas Sarawat, Charter Communications; Drew Davis & Paul Blaser, Cox Communications; Damian Poltz & Dave Morley, Shaw Communications; Eduardo Panciera, Telecom Argentina; Philippe Perron, Sylvain Archambault, Eric Menu, Géraldine Trouillard & David Lagacé, Videotron; Gavin Young & Bruno Cornaglia, Vodafone
More Results >>