SUCCESSFULDEPLOYMENT

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1 EXECUTIVEBRIEF SUCCESSFULDEPLOYMENT OFREMOTEPHY EvolvingtheNetworktoIncrease BandwidthandReducePower andspacerequirements

/arriseverywhere SUCCESSFULDEPLOYMENTOFREMOTEPHY EvolvingtheNetworktoIncreaseBandwidth andreducepowerandspacerequirements Todealwithrapidgrowthinbandwidthdemand,Operatorsmustembracenewtechnologiesand

however,theyalneedtodeterminewhichcombinationofadjustmentswilbestmeettheir subscriberdemandoverthenextfiveto10years.

2 /arriseverywhere SUCCESSFULDEPLOYMENTOFREMOTEPHY EvolvingtheNetworktoIncreaseBandwidth andreducepowerandspacerequirements Todealwithrapidgrowthinbandwidthdemand,Operatorsmustembracenewtechnologiesand architecturesthatsupplythedesiredcapacity,aswelasdeliverhigherdataspeedsandoperationalcost savings.manyareadoptingdocsis3.1anddistributedaccessarchitecturestoupdatetheirnetwork infrastructure.however,theyalneedtodeterminewhichcombinationofadjustmentswilbestmeettheir subscriberdemandoverthenextfiveto10years.asonepioneeringdanishcableoperatorhasdiscovered, RemotePHY(R-PHY)canbeakeyingredientinthetransformationrequiredtobuildamoreefficient, scalable,cost-effectivenetwork. scalable,cost-effectivenetwork. NIELSON SLAW OFINTERNETBANDWIDTH (GrowthRate=50%/Year) 300bpsDS KbpsUS 56KbpsDS 100KbpsUS MbpsDS MbpsUS 10MbpsDS 10MbpsUS MbpsDS MbpsUS GbpsDS 2016 DOWNSTREAM UPSTREAM EraofSymmetrical Services ExtendedSpectrum DOCSISw/FDX FDX DOCSIS3.1 2Gbps Gbps Gbps Gbps Gbps Gbps 10Gbps 1Gbps 100Mbps 10Mbps 1Mbps 100Kbps 100Kbps 10Kbps 1Kbps 100bps EXECUTIVEBRIEF

WhyRemotePHY? DistributedAccessArchitecture(DAA)isanevolutionarystepinextendinghigh-performancefiber connectionsclosertothesubscriberhome.

3 WhyRemotePHY? DistributedAccessArchitecture(DAA)isanevolutionarystepinextendinghigh-performancefiber connectionsclosertothesubscriberhome.r-phyisatechniqueforseparatingtheqam modulation/ demodulationportionofthetraditionalintegratedcmtsorccapandmovingittotheendofthenetwork. Shiftingthesecomponentstothenodestructure,closertothesubscriber,dramaticalyboostssignal performanceandreducesspaceandpowerrequirementsattheheadend.byupgradingtoaremotephy network,whileleveragingdaaanddocsis3.1,whichdeliversbeterspectralefficienciesandwiderchannels forboththedownstream andupstream,operatorscanincreasebandwidthsupplyandimprovecost-efficiency. Morebandwidth,smalerspace,lesspower TheadvantagesofRemotePHYstartwithtransitioningfrom analogsignalstodigitalopticsonthefiber network.digitalfibersdonotrequirefrequenttuningandadjustments,anddigitaltransmissionproduces morebandwidthfrom anexistingfibernetwork.movingrfsignalprocessingfrom theheadendtothenode eliminatessignaldegradationinherentintransmissionoveram fiber,thusboostingthesignal-to-noiseratio forbetersignalqualityattheend-of-line.theimprovedsnralowsdocsis3.1topushmoredatathrough thesameamountofrfspectrum,andwithoutchanging"lastmile"wiring.bandwidthcapacityonexisting hybridfibercoax(hfc)networksjumpsfrom 0.1Gbpsto Gbpsintheupstream directionandfrom 1Gbpsto10Gbpsgoingdownstream. Bymovingfunctionalityout,R-PHYnetworksalsogreatlyreduceheadendandhubspace,aswelaspower requirements,generatingsubstantialsavingsonfacilitymaintenance.also,becauser-phydigitalfibershave fewerdistancelimitations,theheadend/hubcanbemoreremotefrom thenodeandsubscriber,openingup opportunitiesforhubconsolidation.centralizingmaccorefunctionalityindatacenterscandramaticaly simplifyoperationsbyreducingthenumberofdevicestobemanaged,andbyaddingautomation. Stofa sgroundbreakingjourneytoefficientlydelivermorebandwidth OneofthefirstRemotePHYdeploymentsintheworldwasperformedbyStofa,Denmark'ssecond-biggest provideroftelevision,broadbandandtelephony.thedanishoperatordeliversbroadbandtomorethan 500,000households,withservicesincludinghigh-speeddata,voiceandQAM video.in2016,stofalaunched aprojecttoplananetworkupgradethatwouldalowittostayaheadofitsforecastedsubscriberbandwidth 2 /arriseverywhere

4 demandcurve.stofachosearrisasapartnerfortechnology,planning,networkdesignandproduct deployment. Priortothenetworkupgradeproject,Stofa smodulararchitectureplacedcmtsintheheadendandthe associatedeqamsattheantennafacilitieslocation.benefitsoftheupgradeincluded: LeveragingDOCSIS3.1toincreasecapacityinboththeupstream andthedownstream directions. Transitioningtodigitalfiberwoulddrivebeterutilizationbymultiplexingmanynodesontothesame existingfiber. UsingtheIPprotocolontopofdigitalfibertoenabledynamicsharingoftrafficacrossfibers.Reaching ahighermodulationorderwouldincreasetheamountofspectrum availableforservices. Easingspaceandpowerrequirementsathubandheadendlocations. EnablingStofatoproactivelymanagenetworkfunctions. GetingthenetworkarchitecturejustrightusingRemotePHY AfteritwasdecidedtoconvergealDOCSIS,VODandbroadcastcustomerservicesontooneplatform,the team sfocusshiftedtocraftingadesignthatwouldbringthebenefitsofremotephytothenetwork.al serviceswouldbeprocessedbythemaccoreandtransmitedoverdigitalfibertother-phynode. Convergencewouldcreateoperationalsimplicitybasedonaunifieddatapathforalservices. Afterinitialtesting,theteam launchedalimitedfieldtrialtolearnmoreaboutitsabilitytoconvergedocsis andvodvideoservicesovertheremotephyarchitecture.usingpre-productionsoftware,thelabandfield trialsencounteredveryfewissues,whilegivingtheengineeringandoperationsteamsvaluableexperience withservicesconfiguration,monitoringanddebugging. AnatomyofasuccessfulR-PHYdeployment StofacapturedRFsignaldatabeforeandafterthedeployment.Upstream noisedatacolectedatther-phy nodeshowedanaverage2.5dbimprovementinsnr withupto8.2dbimprovementinsomeareas.this resultclearsthewayforstofatogotohigherdocsis3.1modulationsinthefuture,whichwilprovide increasedupstream capacitytosubscribersforfasteruploadspeeds. 3 /arriseverywhere

$stofa sbefore-and-aftercomparison of96servicegroupsrevealedthatmovingphyprocessingoutoftheheadendreducedthenumberofrack unitsrequiredbyabouttwothirds,from 64inthelegacyarchitectureto19.$ Powerdemanddecreasedby twotimes,droppingfrom 7,950W inthelegacyarchitectureto3,485w forremotephy.

Powerdemanddecreasedby twotimes,droppingfrom 7,950W inthelegacyarchitectureto3,485w forremotephy.

5 Asidefrom increasingcapacity,ther-phydeploymentenabledstofatorecognizespaceandpowersavings intheheadendwiththepotentialforfacilitiesconsolidationinthefuture.stofa sbefore-and-aftercomparison of96servicegroupsrevealedthatmovingphyprocessingoutoftheheadendreducedthenumberofrack unitsrequiredbyabouttwothirds,from 64inthelegacyarchitectureto19.Powerdemanddecreasedby twotimes,droppingfrom 7,950W inthelegacyarchitectureto3,485w forremotephy. CentralizedmanagementmadetheoperationofthenewarchitecturesignificantlyeasiercomparedtoStofa s previousnetwork.thenumberofmanagedheadenddevicesneededtosupport200servicegroupsdropped from eighttofour(onemaccore,twotimingserversandoneaggregationrouter),radicalysimplifying operations.asingleprovisioninginterfaceforthemaccorenowalowsadministratorstoeasilyperform changesintheprovisioningsystem andbackofficetools.therearefewerinteroperabilityissuesand,with feweripaddressesneeded,thestofateam cankeepasmalerinventorytodealwithoutages. R-PHYhascreatedapathtowardvirtualizingfunctionsandcentralizingthem indatacenters.futureexpansion ofstofa snetworkcanbeaccomplishedbyaddinglicensesaspartofregularnetworkupgradecyclesandby performingconfigurationchangesremotelyratherthansendingtechnicianstothefield. Majortakeawaysfrom Stofa sexperience TheStofadeploymentoffersseveralvaluablebestpracticeswhenupgradingtoR-PHY: Starttestingearly.Becomefamiliarwiththeproductandarchitectureasearlyaspossible. Planahead.Establishingthelabandfieldqualificationprocessearlygivestechniciansandnetworkengineers timetofigureouttheirneedstosupporttheeffort.layingoutthedeploymentphaseshelpsuncover migrationchalengesandoperationalissuesbeforetheycanimpedetherolout. DedicateresourcestoCIN networkandtimingarchitecture.assignresourcesthathavetheright experienceandskilsetstoplantheseaspectsofthenetwork. Startslowly.Aim foragradualmigrationthatalocatessufficienttimeforcapturingprocessglitchesand technicalissues.startyourfielddeploymentwithonenode,thengradualyincreasethescaletofuldeployment. Automate.Makingsignificantchangestothenetworkinfrastructurepresentsanopportunitytoautomate moreprocessesandmakethedeploymentteam aswelasthemaintenanceandsupportteamsmore productiveinthelongterm. 4 /arriseverywhere

6 Makeitapartnership.Betransparentwithyourequipmentvendor.Weeklymeetingsbetweenintegration teamswilaloweveryonetoreactquicklywhenroadblocksareencounteredandcreateeffectiveworkarounds together. Conclusion EvolvingthenetworkwithaRemotePHYapproachcanprovideimmediatevaluebyincreasingbandwidth capacity,whilereducingcostsassociatedwithoperations,powerandcooling.operatorscanmoreefficiently meetsubscriberdemandformorebandwidth,aswelasbeinapositiontoeasilyexpandtheservicesthey deliverinthefuture. Formoreinformation,pleasevisit. 5 /arriseverywhere

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