introduction to distributed access architecture (daa) and ... chicago intro to daa.pdf · daa...

IntroductiontoDistributedAccessArchitecture(DAA)andRemotePHYSCTEChicago,2017StephenKraiman

Copyright2017– ARRISEnterprises,LLC.Allrightsreserved.


Agenda

• WhatisDistributedAccessArchitecture– Description– Benefits&Drawbacks/Usecases– FormsofDAA

• DeeperDive:RemotePHY– Standards(includeOpenRPD)andInterop– Ecosystem

September2017 2


HowDidWeGetHere?CMTSEvolutionD

owns

tream

Cha

nnel

Den

sity

DOCSIS1.1:1Dx8U

DOCSIS2.0:2Dx12U

DOCSIS3.0Gen.1:16DS/blade

DOCSIS3.0Gen.2:32DS/blade

c.2001 c.2004 2008 2011

3September2017

2013 2017

CCAP:384DS/blade

DAA


WhatIsDistributedAccessArchitecture?


ExplosiveGrowthinBandwidthConsumption

Head-endHFCNetwork

Subscribers

HugeGrowthHere!

5September2017


ExplosiveGrowthinBandwidthConsumption

Head-end

HFCNetworkSubscribers

HugeGrowthHere!

Whatdoesthatmeanhere?

6September2017


AWorkingDefinition….

• WhatdoesDistributedAccessArchitecturemean?

• Replacinganalogdistribution(analoglasers)withastandarddigital(Ethernet)opticaltransport.

• DistributedAccessArchitecturescansolvehead-endspace,power,andHVACcapacityissuesbymovingsomekeyfunctionsoftoday’sCCAPtoresideinsidethefibernode.

• RemotePHY(RPD)isonesuchtechnologythatalsocanprovidetheMSOwiththeadvantageofcostreductionbyeliminatingtheanaloglasersandreducingamplifiercascadesthusimprovingSNR.

• WidespreaddeploymentofDAAcanalsoenableconsolidationofexistinghead-endfacilitiesintolarger,morecentralizeddatacenters.

7September2017


Centralized&DistributedAccessArchitectures-Simplified

Node / Gateway Actives PassivesMSO Facility

Optical Rcvr

Optical Xmtr

AmplitudeModulation

AmplitudeModulationMAC (DS)

MAC (US)

I-CCAP

PHY (DS)

PHY(US)

RFSignals HybridFiberCoax

CentralizedAccessArchitecture– I-CCAP

RemoteCCAPNode

RFSignals

Router DistributedAccessArchitecture(DAA)– RemoteCCAP

MAC (DS) MAC (US)

PHY (DS)PHY(US)NG

-EPO

NAW

GP2P

10GEPON

10GEthe

rnet

NG-PON2

OTN-G.70

9

DigitalOptics(OpticalEthernet/G.709/PON)

DigitalOptics

RemotePHYNode

RFSignals

DigitalOptics(OpticalEthernet/G.709/PON)

DistributedAccessArchitecture(DAA)- RemotePHY

PHY (DS)PHY(US)

CCAPMACCore

MAC (DS)

MAC (US)

DigitalOptics

RFSignals

HFCNode

8September2017


Increase HFC Bandwidth Capacity

DistributedArchitectureBenefitsBetter end-of-line signal quality

Operational Efficiencies

IP Convergence

Better spectral efficiency

More wavelengths, better reach

Reduce headend power, space, and cooling requirements; hub consolidation

Add QAMs without changing RF combining network, plant balance

Partitions scope of change on a node-by-node basis

Digital fiber “set and forget”

Extend IP network to the node

Alignment with FTTx build-out

Leverage standards-based interconnectivity & economies of scale

9September2017


DAAImprovementRelativeI-CCAP(CAA)Deployments

10September2017


PowerDistribution- Fuses PowerDistribution- Fuses PowerDistribution- FusesPowerDistribution- Fuses PowerDistribution- Fuses

HeadendSpace:CaseStudy- I-CCAP,multiplenodesperSG

September2017 11

OpticalDemux

I-CCAP

ReturnRFSplitter

ReturnRFSplitter

ReturnRFSplitter

OOBRFCombining

OOBOOBOOB

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

OpticalMux

DSBC/NCCombining

DSBC/NCCombining

TXAMOptics

TXAMOptics

TXAMOptics

TXAMOptics

TXAMOptics

BCDistribution

BCDistribution

OpticalDemux

ReturnRFSplitter

ReturnRFSplitter

ReturnRFSplitter

ARPDRFCombining

ARPDARPDARPD

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

RXAMOptics

OpticalMux

DSBC/NCCombining

DSBC/NCCombining

TXAMOptics

TXAMOptics

TXAMOptics

TXAMOptics

TXAMOptics

BCDistribution

BCDistribution

ReturnUSCombining

ReturnUSCombining

DSSG/NodeSplitting

OpticalTransport


PowerDistribution- Fuses

HeadendSpace:CaseStudy- CCAPCore,singlenodeperSG

September2017 12

CCAPCore

DaaS Switch– 48portsDaaS Switch– 48ports

DaaS Switch– 48portsDaaS Switch– 48portsDaaS Switch– 48ports

SpineEthernetSwitchSpineEthernetSwitch

OpticalMux/Demux

OpticalMux/Demux

FiberMgmtRapidFirePatchPanel


KeyRPHYBenefitsvsRMACPHY

13September2017

R-PHY R-MACPHY

VendorEcosystemandStandards

• Morevendorcompetition—canchoosebest-inbreedforCore/Nodeseparately.

• Morescopeforvirtualization• DEPI/UEPI/GCPexplicitspecifications

• Nocable-specificnetworkingprotocols• Ethernet /PONspecmaturity(vs

DEPI/UEPI/GCP)• NoneedforR-DTIclock

Node • Less power,lowermodulecost• Simplersoftware(lessriskof“bricking”)• Canfitinsmallerfootprint• Lowerthermalprofile

• Doesn’trequireCore/RPHY“handshake”—operates asanEthernet/IP-attacheddevice

• Headendbecomesagnosticto”flavor”ofDAA(DOCSIS,PON,WiFi,…)

MACScaling • MACandPHYcanscaleindependently• Supports Multi-Gbps MACforFDX

• Cansupportsmallscale/ “asneeded”deploymentbetter

• ShorterdistancefromMACtosubscriber–possiblelatencybenefits

Operations • ManagementandprovisioningsimilartoI-CCAP

• Supportsexisting I-CCAPvendorenhancementswithoutneedingmultivendorCore/PHYinterop


PossibleApplicationofRPHY– FacilityConsolidation

CONSOLIDATION

DataCenterCCAPCore

R-PHYShelf

RPD

R-PHYShelf

RPD

14September2017


WhatIsRemotePHY?- StandardsandInterop


CableLabs MHAv2Specificationswww.cablelabs.com/specsàDOCSISàModular HeadendArchitecture

September2017 16

• CM-SP-R-PHY(RemotePHYSpecification)aka“R-PHY”• CM-SP-GCP(GenericControlPlaneSpecification)aka“GCP”• CM-SP-R-DEPI(RemoteDownstreamExternalPHYInterfaceSpecification)aka“R-DEPI”• CM-SP-R-UEPI(RemoteUpstreamExternalPHYInterfaceSpecification)aka“R-UEPI”or“UEPI”• CM-SP-R-DTI(RemoteDOCSISTimingInterfaceSpecification)aka“R-DTI”• CM-SP-R-OOB(RemoteOut-of-BandSpecification)aka“R-OOB”• CM-SP-R-OSSI(RemoteOSSI)aka“R-OSSI”• CM-SP-DRFIAppendixD• CM-TR-MHAv2(ModularHeadendArchitecturev2TechnicalReport)• CM-TR-DCA(DistributedCCAPArchitecturesTechnicalReport)• Also

– CableLabs RemotePHYATPworkinggroup(ATP-Init,ATP-Service,ATP-Management)– CableLabs OpenRPD softwareworkinggroup


RemotePHYInteroperability

• CableLabs®Interops– MonthlyinDenver,startingDecember2016– Ghent,May2017

• CableLabsDryRun– FirstATPDryRuntargetedforSeptember

• CableLabsQualification– TBA

• Operator-drivenactivities• Vendor-drivenactivities

September2017 17


Interoperability:CableLabs OpenRPD SoftwareWorkingGroup

• Frameworkformulti-vendorcollaboration,withanemphasisonspecinterpretation• StartedMarch2016

September2017 18


WhatisincludedintheOpenRPDsoftware?

• OpenRPDsoftwaremodulesareasubsetofanRPD’ssoftwaresuite– TargetOpenRPDmodulesincludeCLI,GCP,DEPI,UEPI,HAL,L2TPv3

– Othermoduleswillbeeitherdevelopedin-houseorlicensedfromthird-partysuppliers

– Focusoninterpretationforinteroperability

September2017

OOB

MACSec

OpenRPDModule,underApache

CLI GCP

HAL

OpenSourceModules,underpreexistinglicenses Vendorproprietarymodules?Oropensourced?

Legends:

19


WhatIsRemotePHY?- CCAPCoreandRemotePHYDevice(RPD)


R-PHYInternalComponents

21September2017

• Also:Security,Management,OutofBand


OutsidePlant/HomeCabinetHeadendorDatacenter SmallHeadend/Hub

RemotePHYAccessArchitectureVariations

CCAPCorevCore

CabinetRemoteShelf

MDUMininode

RFoG /CWDM

OBIFreeRFoG ONU

DigitallinkAnaloglink

x32

RemotePHYNode

<250-500HP

x32

SFU

TXRX

MDU

8-40HP

September2017

Today’sI-CCAP

RemoteShelf

HFCNode

TXRX

<250HP

TXRX

VideoSw

itch

RF-Com

b.

OOBManagem

ent/M

onito

ring


HowDoestheEcosystemChange?- Data,Switching,Timing,OOB,Video


EthernetSwitchConsiderations

24

• IPv6vsIPv4• PTP/IEEE1588TransparentClockvsBoundaryClock• DHCPRelay• Security(MACSec,802.1x)• MulticastFeatures(MLD,static,PIM,…)• IEEE802.3ad/LACP• OpenFlow(futureSDN)• Portmix(100G,40G,10G)

September2017


IEEE1588PrecisionTimeProtocol(PTP)GrandmasterClock• ReceivesaGPSinputasaprimaryreferenceforhigh-precisionpacketnetworksynchronization

• VendorsatCableLabs asofJuly2017– Microsemi– ADVA

September2017 25


VideoOOBSupport(SCTE55-2)fromCM-SP-R-OOB-I05-170111

26September2017


VideoOOBSupport(SCTE55-1)fromCM-SP-R-OOB-I05-170111

27September2017


OtherOOBSignals

28

• Leakage• AGC• Alignmentandotherpilottones• Sweep• Telemetry(Ingressdetection,ampcontrol,etc)

Dependingonvendorsolution,thesecanbesupportednativelyorviaNDF/NDRorforward/returnHFCoverlay

September2017


TraditionalHFCAccessNetwork

29September2017 29

HFCNetworkHFC

Network

DOCSISCMTS

RFSplitter

RFCom

bine

rRFSplitter

VODEQAM

OOBMod

BCEQAM

ReturnLaserRx

RF

ForwardLaserTx

RF

OOBDemod

RF

CM

D-STB

FiberNode

FiberNode RFLight

FiberNode RFLightOptical

Tx/Rx

OpticalTx/Rx


ICCAPHFCAccessNetworkArchitecture(1stEvolution)

29September2017 30

HFCNetworkHFC

Network

DOCSISCMTS

RFSplitter

RFSplitter

VODEQAM

OOBMod

BCEQAM

ReturnLaserRx

RF

ForwardLaserTx

RF

OOBDemod

RF

CM

D-STB

FiberNode

FiberNode RFLight

FiberNode RFLight

I-CCAPOpticalTx/Rx

OpticalTx/Rx


I-CoreHFCAccessNetworkArchitecture(2ndEvolution)– NoAnalogVideo!

29September2017 31

I-CORE

OOBMAC

VODMAC

BCEQMAC

DOCSISCMTSMAC

EthDWDM

EthDWDM

RPHY

RPHY


IsDAARightforYou?- Migrationconsiderations,andwhatcomesnext?


IsDAArightforyou?

• Doesitsolveaproblemforyoucost-effectively?Intherighttimeframe?• Isitinlinewithyourcorporatestrategy?• Doesitprovidesufficientflexibilitytoavoidstrandedinvestments?

– Videoinfrastructure(broadcast,narrowcast,conditionalaccess)– Databandwidthcapacity,DOCSIS3.1,FDX,US/DSsplit,frequencyexpansion– OOBinfrastructure– Fiberbuildout– HFCdistances/hubconsolidation/insideandoutsideplantinfrastructure– Personnelexpertiseandtraining,competitiveservices

September2017 33

ThankYou!StephenKraiman,[email protected]

introduction to distributed access architecture (daa) and ... chicago intro to daa.pdf · daa...

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