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Traffic Engineering for the Access Network

OVERVIEW

As a cable operator, your concern is to continuously offer your customer the agreed performance level at a competitive cost. With changing user profiles, increasing penetration rate and new types of services being introduced, maintaining or even improving the level of service is vital.
The course will provide you with the information needed for the logical design of your (Euro)DOCSIS access network. It is explained how to calculate the overhead for the upstream and downstream packets. A statistical model is provided that can be used as a guideline to calculate the numbers of modems you can serve on a downstream or upstream. If you plan to roll out a VoIP over Cable solution in an access network that is already loaded with bursty data traffic, you will be able to calculate the statistical odds for call blocking in a given configuration.

WHAT CAN YOU EXPECT?

Achieve an understanding of the basic ideas behind traffic engineering on the access network.
Understand all the considerations from traffic load point of view when dimensioning the access network.
Understand the considerations involved in dimensioning the access network when deploying VoIP over Cable.

CONTENT

PART 1: INTRODUCTION
The traffic engineering problem.

PART 2: CHANNEL CONFIGURATION CONCEPTS
Access network design, US rates.

PART 3: OVERHEAD IN THE ACCESS NETWORK
PHY, FEC and signalling overhead, calculating of number of required minislots per packet.

PART 4: VOICE TRAFFIC ENGINEERING
Bandwidth usage per codec, call blocking probability, erlang.

PART 5: DATA TRAFFIC ENGINEERING
Traffic engineering cycle, bursty data model.

PART 6: CASE STUDY
Dimensioning a system for voice and data services.

PREREQUISITES

Basic understanding of HFC network technology, basics of EuroDOCSIS.