Managing DOCSIS Capacity over HFC Networks DOCSIS 2.0, 3.0 and Future 3.1 A Technical Paper Prepared for Cisco Live 2015 By John J. Downey CMTS Technical Leader Cisco Systems RTP, NC 919-392-9150
[email protected] Martin Mattingly Manager, Business Development Cisco Systems Lawrenceville, GA 770-236-1338
[email protected] Table of Contents Title Page Number Introduction _________________________________________________________________ 3 Number One Capacity Question _________________________________________________ 4 DS Capacity Overhead ________________________________________________________ 5 PowerboostTM ________________________________________________________________ 5 Baseline Capacity ____________________________________________________________ 6 Speed Variables ______________________________________________________________ 7 D3.1 Capacity Planning Concerns ________________________________________________ 7 Spectrum Planning ____________________________________________________________ 8 D3.1 Spectrum Thoughts ______________________________________________________ 10 US Level Swing over Temperature ______________________________________________ 12 Five Potential Migration Steps and Ideas _________________________________________ 13 DOCSIS 3.0/3.1 DS Channel and Spectrum Allocation ____________________________ 13 DOCSIS 3.0/3.1 US Channel and Spectrum Allocation ____________________________ 14 1. 12 DSs - 5-42 MHz US & 750 MHz DS _________________________________________ 16 25x Over Subscription Estimate ________________________________________