IntroductiontoDistributedAccessArchitecture(DAA)andRemotePHYSCTEChicago,2017StephenKraiman
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Copyright2017– ARRISEnterprises,LLC.Allrightsreserved.
Agenda
• WhatisDistributedAccessArchitecture– Description– Benefits&Drawbacks/Usecases– FormsofDAA
• DeeperDive:RemotePHY– Standards(includeOpenRPD)andInterop– Ecosystem
September2017 2
Copyright2017– ARRISEnterprises,LLC.Allrightsreserved.
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
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WhatIsDistributedAccessArchitecture?
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ExplosiveGrowthinBandwidthConsumption
Head-endHFCNetwork
Subscribers
HugeGrowthHere!
5September2017
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ExplosiveGrowthinBandwidthConsumption
Head-end
HFCNetworkSubscribers
HugeGrowthHere!
Whatdoesthatmeanhere?
6September2017
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AWorkingDefinition….
• WhatdoesDistributedAccessArchitecturemean?
• Replacinganalogdistribution(analoglasers)withastandarddigital(Ethernet)opticaltransport.
• DistributedAccessArchitecturescansolvehead-endspace,power,andHVACcapacityissuesbymovingsomekeyfunctionsoftoday’sCCAPtoresideinsidethefibernode.
• RemotePHY(RPD)isonesuchtechnologythatalsocanprovidetheMSOwiththeadvantageofcostreductionbyeliminatingtheanaloglasersandreducingamplifiercascadesthusimprovingSNR.
• WidespreaddeploymentofDAAcanalsoenableconsolidationofexistinghead-endfacilitiesintolarger,morecentralizeddatacenters.
7September2017
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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
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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
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DAAImprovementRelativeI-CCAP(CAA)Deployments
10September2017
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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
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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
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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
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PossibleApplicationofRPHY– FacilityConsolidation
CONSOLIDATION
DataCenterCCAPCore
R-PHYShelf
RPD
R-PHYShelf
RPD
14September2017
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WhatIsRemotePHY?- StandardsandInterop
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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
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RemotePHYInteroperability
• CableLabs®Interops– MonthlyinDenver,startingDecember2016– Ghent,May2017
• CableLabsDryRun– FirstATPDryRuntargetedforSeptember
• CableLabsQualification– TBA
• Operator-drivenactivities• Vendor-drivenactivities
September2017 17
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Interoperability:CableLabs OpenRPD SoftwareWorkingGroup
• Frameworkformulti-vendorcollaboration,withanemphasisonspecinterpretation• StartedMarch2016
September2017 18
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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
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WhatIsRemotePHY?- CCAPCoreandRemotePHYDevice(RPD)
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R-PHYInternalComponents
21September2017
• Also:Security,Management,OutofBand
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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
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HowDoestheEcosystemChange?- Data,Switching,Timing,OOB,Video
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EthernetSwitchConsiderations
24
• IPv6vsIPv4• PTP/IEEE1588TransparentClockvsBoundaryClock• DHCPRelay• Security(MACSec,802.1x)• MulticastFeatures(MLD,static,PIM,…)• IEEE802.3ad/LACP• OpenFlow(futureSDN)• Portmix(100G,40G,10G)
September2017
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IEEE1588PrecisionTimeProtocol(PTP)GrandmasterClock• ReceivesaGPSinputasaprimaryreferenceforhigh-precisionpacketnetworksynchronization
• VendorsatCableLabs asofJuly2017– Microsemi– ADVA
September2017 25
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VideoOOBSupport(SCTE55-2)fromCM-SP-R-OOB-I05-170111
26September2017
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VideoOOBSupport(SCTE55-1)fromCM-SP-R-OOB-I05-170111
27September2017
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OtherOOBSignals
28
• Leakage• AGC• Alignmentandotherpilottones• Sweep• Telemetry(Ingressdetection,ampcontrol,etc)
Dependingonvendorsolution,thesecanbesupportednativelyorviaNDF/NDRorforward/returnHFCoverlay
September2017
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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
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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
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I-CoreHFCAccessNetworkArchitecture(2ndEvolution)– NoAnalogVideo!
29September2017 31
I-CORE
OOBMAC
VODMAC
BCEQMAC
DOCSISCMTSMAC
EthDWDM
EthDWDM
RPHY
RPHY
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IsDAARightforYou?- Migrationconsiderations,andwhatcomesnext?
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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]