Broadband Services Primer

Post on 22-Apr-2015

1.180 views 1 download

description

 

Transcript of Broadband Services Primer

IPTV Deployment via VDSL2

at the Customer Premises

WSTA 2008 Annual Convention

Lake Geneva, WI5/21/2008

Broadband Delivery

• HFC – Hybrid Fiber Coax

• PON – Passive Optical Network

• xDSL – Digital Subscriber Line

HFC• Traditional CATV Network – Comcast,

Time Warner, Charter, Cox, etc.

• Shared BW – VoIP, Data

• RF – Video - Broadcast

Node

O/E

CATV

Head

End

Tap

RG-8

Fiber

RG-11

~500

Homes

www.speakeasy.net/speedtest/

xDSL• Traditional POTS/ISDN/ADSL/SDSL

Network – AT&T, Verizon, Qwest, etc.

• Dedicated BW – Voice (POTS), Data

• Distance Limited

Remote

DSLAM

O/E

Central

Office

SAI

UTP 25P

Fiber

UTP 3/4P

ADSL <18kft

UP

S

DS

LA

M

VDSL2

• System Upgrade from Traditional

POTS/ISDN/ADSL/SDSL Network –

AT&T, CenturyTel, Qwest, etc.

• Dedicated BW – IPTV, Voice, Data

• Distance Limited

Remote

DSLAM

O/EUTP 2P/4P

VDSL2 <3kft

FiberCentral

Office UP

S

SAIUTP 25P

Bandwidth (3kft)• VDSL2

– Dedicated - 30Mbs

• HFC DOCSIS 2.0 – Shared – 40Mbs – ~3Mbs*

• HFC DOCSIS 3.0 – Shared (2010+) – 160Mbs – ~12Mbs**Based on 500 HP/node and 30% TR

• PON – Shared – 622-2488Mbs – ~20 - 40Mbs**Based on BPON/32 and GPON/64 split

IPTV

• 3SD/1HD takes ~25Mbs - 4HD ~37Mbs

– 3mbs for SD and 7Mbs for HD with 6Mbs data

• Efficient Transport of Video

• Interactive Guide

• Quick Channel Change

Radio Frequency Interference (RFI)

• RFI introduced into drop from DSLAM to subscriber

• RFI is introduced from various sources– Bug Zapper

– Dimmer Switch

– All electronics and computers

– Florescent light ballast

– Motors – washing machine, refrigerators, etc.

– RF controlled devices

– Power Grid

• Concentration of RFI in MDU’s

• Filtering eliminates random noise from entering subscriber premises– optimizes Home Network Performance

• Splitter/Filter

– Eliminate out of Band Noise

POTSVDSL2

Noise Noise

Home Network - HPNAB• Home Network Connects all Components

– DVR, Set Top Box, Computers

• Home Wiring is the biggest challenge– Phone & Coax wiring in most Homes

• Home runs best solution

• Coax outlets in convenient locations– RG-6 or better

– Minimize connections and splitters

• Phone Wiring – At least Cat3 or better

– No bridge taps

• VDSL2-8a (25kHz-8.5MHz) HPNAB (12-28MHz)

twisted pair

100Ω

twisted pair

100Ω

75Ω coaxial

Gateway Set-top

boxTV

1x3 splitterDM000373

Splitter/Filter

DM000417A

SFU

VDSL

signal

HPNA

signal

POTS

VDSL and

HPNA signal

Telco NIDSNI-4600

Coax NIDCG-1000XL

Diplexer

DM000371

Ethernet over

Coax IPTV

Splitter

1x2 DM000372

1x3 DM000373

1x4 DM000374

1x6 DM000375

HPNA HPNA/VDSL VDSL

DM

00

04

17

A

Set-top

boxTV

DC Blocked Balun

DM000404

Field Observation

IPTV Delivery

Starting at the Cross Connect

The

Nelson’s

The Garcia’s

The College Guy’s

Apartment

The Smith’s

Interior Components

Some Key Factors for Successful

Installation• Install should last between 2-4 hours

• Knowledgeable Technicians – Knows the Product

• Promise of Future Services– Dynamic Provisioning

– Video Phone

– Security Monitoring

– Remote Video

• QoS – Telco Service is Guaranteed

Content will Win!Video is more important

Phone and data is assumed

Terms• ADSL – Asymmetric DSL

• CATV – Community Antenna TV

• DOCSIS – Data-Over-Cable Services Interface Specification

• DSLAM - Digital Subscriber Line Access Multiplexer

• DSL – Digital Subscriber Line

• HFC – Hybrid Fiber Coax

• HPNA -Home Phoneline Networking Alliance – Network Standard

• ISDN – Integrated Digital Services Network

• Mbs – Mega Bits per second, MBs – Mega Bytes per second (8 x Mbs)

• MSO – Multi-System Operator

• OLT – Optical Line Terminal, ONU – Optical Line Unit

• PON – Passive Optical Network – APON, BPON, GPON, xPON

• POTS – Plain Old Telephone Service

• PSTN – Public Switched Telephone Network

• RG – Residential Gateway

• SAC - Service Area Concept (Strategy)

• SAI - Service Access Interface UDSL – Ultra-high-bit-rate DSL

• UPS – Uninterruptible Power Supply

• VDSL – Very-high-bit-rate DSL using 25KHz to 12MHz

• VDSL2 – Improved Version of VDSL using 25KHz to 30MHz

• VRAD – Video Ready Access Device (Basically Remote DSLAM for VDSL)