CCAP Specifications

Notes:• All specs include/reference European annexes developed by Cable Europe Labs1. For additional details see www.CableLabs.com2. MSO specifications developed by Comcast in partnership with Cox, including

contributions from Cablevision, Charter, Liberty/UPC, NCTC, Rogers and Cable Europe Labs on behalf of its members

HSD SG 1

HSD SG 2

HSD SG 3

HSD SG 4

HSD SG 5

HSD SG 6

HSD SG 7

HSD SG 8

Bro

adca

st S

G

Dow

nstr

eam

Li

ne C

ard

SDV SG X

SDV SG Y

SDV SG Z

VoD SG A

VoD SG B

VoD SG C

VoD SG D

Reproduce QAM content to align service groupsExample: 8-port downstream line card configured with 1 broadcast SG, data/voice SGs in each port, and 3 SDV and 4 VoD SGs of different sizes

Port #1

Port #8

CCAP QAM Replication

CCAP: Converged Cable Access PlatformCCAP RF Spectrum SupportCCAP supports placing any QAM from 54-1002 MHzExample: 750 MHz system, some analog channels, narrowcast QAMs in 2 groups, broadcast QAMs elsewhere, QAM256 and QAM64 operation

54 MHz 750 MHz

6 MHz gaps filled with broadcast QAMs

Few QAMs in roll-off area in QAM64 mode

Analog

2 NC QAM groups separated by 100 – 200 MHz

A A A BC NC BC NC BC BC

CCAP Network Evolution and Use CasesToday’s Headend

Inte

grat

edM

odul

ar

USUS

HE Router

Non-Routing CCAP

DS

DSDS

CCAP

US

CCAP

DSDSUSUS

HE Router

M-CMTS Core

USUS

DS

HE Router

I-CMTS

DS

BC

EQ

AM

VOD

EQ

AM

SDV

EQAM

USUS

HE Router

M-CMTS CoreB

C E

QAM

VOD

EQ

AM

SDV

EQAM

Evolution to CCAP Full CCAP Deployment

USUS

DS

HE Router

I-CMTS

DS

CCAPDS-only mode

UEQ

AM

DSDS

CC

AP

Dep

loym

ent

Opt

ions

Infr

astr

uctu

re U

pgra

deIn

fras

truc

ture

Upg

rade • Add CCAPs

for all SGs in key HEs to support growth for new services and capacity more dynamically

• Relocate existing equipment to other service areas

Broadcast and OOB

NC Video EQAMs

CMTSs

Existing SGs New SGs

CCAP for Added

Capacity

Existing SGs Existing SGsNew

Ser

vice

Dep

loym

ent

New

Ser

vice

Dep

loym

ent

• Add CCAP for new services

• Maintain existing equipment for existing services

• Eventually integrate other services into CCAPC

apac

ity A

ugm

enta

tion

• Add CCAP as SGs are split or EQAM/ CMTS capacity is added

• Keep current equipment and eventually integrate into CCAP

CC

AP

DS

Port

sPr

ovid

e al

l QA

Ms

for

all d

igit

al s

ervi

ces 64 unique narrowcast QAMs per RF port

+ 96 shared broadcast QAMs per line card

all d

igit

al s

ervi

ces Simplify and

eventually eliminate RF combining

MPEG TS

HSD Voice

VODnDVR

SDV New Svcs

Broadcast

54 MHz65MHz85 MHz

750 MHz850 MHz1 GHz

DOCSIS

combining

CCAP Downstream

RF Port

54 MHz65MHz65MHz85 MHz

54 MHz65MHz

Up to 158 QAMs per RF port configurable for any service

• Increase density to reduce cost, space and power

• Unify the functions of various access network components, including:– CMTS (HSD, voice, DSG, etc.)– UEQAM (VOD, SDV, nDVR)– Broadcast QAMs– Video encryption– PON for business services integrated

in same chassis– Plant sweep and health monitoring

built-in• Simplify engineering & operations,

increasing reliability

MSO Product Specifications [2]

Hardware & Functions

Configuration & Management

Robustness Rules

CableLabs Specifications [1]

CCAP Technical Report

DOCSIS* 3.0, DRFI, DSG, ERMI, L2VPN, VSI, etc.

CCAP Operations System Support Interface

(CCAP-OSSI)

Key CCAP Features

Combiner

Lasers and Receivers

CCAP for new service

Broadcast and OOB

NC Video EQAMs

CMTSs

Combiner

Lasers and Receivers

CCAP for all services

OOB only

Reduced combiner

Lasers and Receivers

CCAPDS-only mode

* DOCSIS is a registered trademark of Cable Television Laboratories (CableLabs)

Overlay Laser (separate broadcast & narrowcast)

SpareAnalog

OOB8-W

ay

Overlay Laser (separate broadcast

TestSpareSpare

ToOther Nodes

+25 dBmV +15 dBmV+26 dBmV

+29 dBmV +19 dBmV

Full-Spectrum Laser (one port all services)Estimate100 feet

of HE coax @ 750 MHz

4-W

ay

all services)

Lase

r for

Ful

lSp

ectr

um

To o

ther

no

des

To o

ther

no

des

+15 +15

4-W

ay

dBmV

Lase

r for

B

road

cast

Lase

r for

N

arro

wca

st

4-W

ay

+36 dBmV

+36 dBmV

1-8

1

2-8

SpareAnalog

OOB

4-W

ay

EQAM functions migrated to CCAP in DS-only mode

Non-Routing Mode of OperationObjectives

CCAP supports routing mode, non-routing mode, or both.• Non-routing mode makes the

following protocols optional:• RIP V2 (RFC 2453)• IS-IS (RFC 5303 and

RFC 5120)• OSPFv2 (RFC 2328 and

RFC 5709)• BGPv4 (RFC 4724 and

RFC 4760)• PIM-SM (RFC 4601)

• The above routing protocols are handled by the HE router

• A CCAP operating in non-routing mode is L3 aware and IP manageable

• A CCAP operating in routing mode includes L3 forwarding functions

Benefits• Takes advantage of existing HE

router capabilities, which provides an extended set of routing features when compared to CCAP/CMTS

• Simplifies the development path for CCAP, bringing the CCAP to market quicker and encouraging new entrants

• Does not impact the CCAP headend architecture in cases where an HE router already exists

• Allows operators the choice to: a. use existing HE routers for IP forwarding functions, or b. to keep the CCAP in routing mode when the HE router does not have as robust a feature set.

Key CCAP Objectives

HE Router

Open Decryption/Encryption Interfaces

SM Session ManagerERM Edge Resource ManagerEnRM Encryption Resource Manager

CMTS Functions• Full DOCSIS*3.0 features• Line rate forwarding• PacketCable 1.5 & 2.0 support• DOCSIS configurable on any QAM• At least ½ of NC QAMs support

DOCSISUEQAM Functions• Flexible QAM channel assignment• Multiple broadcast line-ups/chassis• QAM64 and QAM256 modulation

support• NGOD & CableLabs MHA compliant• QAM Replication for SG alignment

Hardware Platform• Dense chassis: 2.5 Service Groups/RU• 64 narrowcast & 96 broadcast QAM/port• RF performance meets CableLabs DRFI• Full DS spectrum coverage (54 – 1002

MHz)• 6 upstream demodulators per port

High-availability Design• N+1 Redundancy for Access LCs• 1:1 Redundancy for common

components, such as Router, Switch, Fans, Power, etc.

• Hot-swappable line cards• Mid-plane chassis architecture• In-service upgrades

Encryption Functions• Multiple conditional access systems• External ECM generator

PON Functions• Intended for business customers• Mix of PON & HFC cards in same

chassis• Support for both 1G and 10G EPONs• DOCSIS based Provisioning and OSS

Plant Monitoring and Maintenance

• Upstream spectrum surveillance• Support for sweep, balance, etc.

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