DOCSIS 3.1

Overview

DOCSIS 3.1 is the latest version of the DOCSIS set of specifications, promising speeds of up to 10 Gbps. It defines a totally new physical layer for achieving those speeds. However to fully utilize its features, HFC network upgrades are required.

The goal of this course is to provide insight into how the new physical layer operates, the impact on the network and how the HFC network needs to be modified. The course also provides a good understanding of the speeds that can be offered by 3.1 based on network parameters.

It is recommended that the attendee already has a good knowledge of DOCSIS to fully benefit of attending this course.

What can you expect?

• Understand the new features that DOCSIS 3.1 brings
• Understand how to prepare your network for DOCSIS 3.1

Content

The preliminary table of contents, still subject to change, is as follows:

PART 1: INTRODUCTION

• Historical perspective
• Course outline

PART 2: TECHNOLOGY OVERVIEW

• Expanded spectrum usage in 3.1, new channel definition
• The promise of increased bandwidth
• High level overview of 3.1 technology and functionality

PART 3: NEW TOOLS IN THE BOX

• Modern data communication systems and their building blocks
• Understanding OFDM, subcarriers and pilots, cyclic prefix , windowing and equalization
• DOCSIS 3.1 OFDM numerology
• The benefits of LDPC error correction

PART 4: DOWNSTREAM DATA TRANSMISSION

• Anatomy of 3.1 downstream channel and its transmitter/receiver system
• PHY Link Channel (PLC) with OFDM Channel Descriptor (OCD) and Downstream Profile Descriptors
• Next Codeword Pointer (NCP) and profile based transmission

PART 5: UPSTREAM DATA TRANSMISSION

• Anatomy of 3.1 upstream channel and its transmitter/receiver system
• Re-use of legacy minislot definition, introducing QxK minislots
• OFDMA Upstream Data Profiles (OUDP), IUC13
• FEC codeword selection

PART 6: CABLE MODEM INITIALIZATION AND PROFILE PROMOTION

• Ranging and registration, the O-INIT-RNG-REQ message
• Downstream profile promotion, OFDM Profile Test (OPT), OFDM Downstream Spectrum (ODS)
• Upstream profile testing, P-MAP and probing

PART 7: FEATURES

• Timing revisited, DTP, Extended Timestamp
• Advanced Queue Management (AQM)
• Service flows and Hierarchical QoS (HQoS)
• Energy Management, DOCSIS Light Sleep (DLS)

PART 8: PREPARING FOR THE 3.1 TRANSITION

• Expected timelines and scenario's
• Backwards compatibility
• HFC network readiness
• Power levels and other physical layer implications

Prerequisites

Good understanding of (Euro)DOCSIS 3.0 technology.