8/3/2019 Mobile Back Haul Executive Summary

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Mobilebackhaul thepowerbehindLTE

AsanalystTelecomStrategyPartnersstatedin2009:

TophonorsgotoNokiaSiemensNetworksitisgainingrecognitionforitsmobilenetworksexpertiseandprofessionalservicesforcostoptimizationof

solutions,leveragingopticalsystems,CarrierEthernetandavarietyofaccesstechnologies.

Themarket:mobilebroadbandforWeb2.0services

Itmightbeanunfashionabletopicinthemobileworld

wheneveryoneistalkingaboutnext-generationra-

dioaccessbutserviceprovidersarenowfinding

thatoptimizingmobilebackhaultocopewiththevast

riseindatatrafficisaverypressingconcern.While

thekeytorevenuegrowthundoubtedlyliesin3G/4G

mobilebroadbandservicesfortheWeb2.0genera-

tion,thesedemandingcustomersareusedtoseeing

asteadydeclineinthecostperbitfortheirband-width-heavyapplications,andthatsfocusingatten-

tiononexpensiveandageingtraditionalbackhaul

infrastructure.

Thesituationwillchangeespeciallyrapidlyforservice

providersastheystarttoaddressradioaccesswith

LTE(longtermevolution),thenext-generationmobile

standard.Itwillexposeamajorbottleneckinmobile

backhaul,asmuchinfrastructurearoundtheworldis

rootedinlegacyleasedlineandTDMarchitecture

thatsimplywillnotscaleuptoprovideefficientlythe

transportrequirementsofnext-generationnetworks.

AsanalystInfoneticsResearchreports,datatrafficis

likelytosurpassvoicetrafficonmobilenetworksby

2010,thankstotheactivitiesofsubscriberswith

iPhonesandotherbandwidth-hungrydevices.Carri-

erseverywhereareincreasingthebandwidthontheir

backhaulnetworkstohandlethisexplodingIPdata

traffic,andthemostefficient,cost-effectivewaytodo

thatistotransitionfromTDMtopacketIP/Ethernet,

whichisdrivingthemobilebackhaulequipmentmar-

ket,reportsInfonetics.Itaddsthatmobilebackhaul

equipmentinvestmentsjumpedahealthy19%in

2008to$4.6billionworldwide,andrevenueissettoexplodeoverthenext5yearsandbeyond.

ItsapointreinforcedbyanalystGartner,whichstates

thatserviceprovidersshouldplanformorethan100

Mbit/sbackhaulcapacitypersiteviaagracefulmi-

grationfromTDM,factoringinresiliency,end-to-end

networkmanagement,qualityofserviceandSLA

monitoringandnotleast,costpermegabit.

ExecutiveSummary

8/3/2019 Mobile Back Haul Executive Summary

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Full packet backhaul

for 3G and LTE

Hybrid backhaul

for 2G and 3G

Optimizing2G and 3G

networks

DSLInternetgateway

RNC

BSC

Corporateaccess

LTE

NodeB

BTS

BTS BSC

RNCNodeB

Single RAN

Simplify

Lower

cost

Optimize

Ethernet

Ethernet

E1/T1

E1/T1

BTS

NodeB

BSC

RNC

Picture1:Evolutionpathtowardsafullpacketmobilebackhaulnetwork

Thechallenges:maximizingperformanceandcopingwithcomplexity

Thekeyaimistomaximizeserviceperformance

throughput,latencyandtransportefficiencywhile

minimizingtotalcostofownership.Backhaultrans-

portisastrategicandcriticalpartoftheoverall

networkoptimisationequationitaccountsformorethan30%oftechnicaloperationcostsaswellas

30%oftheoverallcapitalinvestmentsformanymo-

bileserviceproviders.Thesearefiguresthatusually

scalelinearlyasmobiledatatrafficgrows.Many

serviceprovidersnowneedtodecoupletransport

costsfromcapacitygrowthandincreasenetwork

efficiencyandsoachieveLTEreadiness.

Butoptimizingmobilebackhaulcanbehighlycom-

plex,asitcaninvolvemultiplenetworklayersanda

widemixoftransporttechnologiesandprotocols.

Adeepknowledgeisneededofthemulti-disciplinary

complexityinvolved.Thedesignofanoptimizednext-

generationmobilebackhaulnetworkandmigration

strategycantesttheresourcesofeventhemostex-

pertoperator.Apartnerwiththerightexpertisecan

helpoperatorsplanandimplementasmooth,cost-

effectiveevolutiontonext-generationbackhaul.

Thesolution:anevolutionarypathtowardsfullpacketmobilebackhaul

Thewayforwardlies,ofcourse,inmigratingalltrans-

porttothepacket-basedworld.Thekeyistochoose

anevolutionarypathwaythatisassimpleandefficient

aspossible,andwhichalsofitsinwithpresentinfra-

structureoutsideofgreen-fieldimplementations.

Thereareanumberofapproachescurrentlyinplace

forbackhaulprincipallyleasedlines,andself-built

microwavesystemssometimessupplementedwith

leasedlines.LTE(withspeedsintensofMbits/s

peruser)willrequirecost-effectiveCarrierEthernet-

basedbackhaulrunningonmicrowave,fibreorhybrid

networks.Certainly,typicalsecondgeneration(2G)

cellsiteshaveafewT1/E1linesforcellularbackhaul

thatwillneedtobeoverhauledforLTEdeployments.

Andincreasingly,theconvergedfixed/mobilebroad-

bandservicemixofferedbyserviceprovidersalso

competinginresidentialandbusinessfixedbroad-bandarecomingintoplayandcanequallybeinte-

gratedintoonesimplifiedCarrierEthernetTransport

backhaulsolution.

TheNokiaSiemensNetworksapproach:optimizingbackhaulisnotonesizefitsall

CarrierEthernetTransportisthebestsolutionfor

manycustomers,eithertolowercostsandsimplify

backhaulacrosstheentirenetwork,ortomigrate

datatraffictoEthernetandkeepvoiceonexisting

transportinfrastructure.WithmigrationtowardsLTE,

serviceprovidersmustensurethattheratiobetween

revenuesgeneratedpercellsiteandthebackhaul

costpersiteiskeptatsustainableandcompetitive

levels.

Ouraimistohelpserviceprovidersenhancecustom-

erexperiencewithtruequalityofserviceandflexible

optionsforbandwidthallocation.Oursolutionsare

tailoredtoindividualtransportinfrastructureneeds

andtheexistingarchitecturesituation.

1) Minimize costs in your cell site solution

Afirststepistoimplementazerofootprintsolution

forsites,whereuniversaltransportcapabilitiesare

alreadyintegratedintoNokiaSiemensNetworks

Flexibasestation.Thiscanoptimizesitecostsby

upto25%byeliminatingadditionalshelterequip-

ment,spaceandpowerconsumptionagreener

waytogo.

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3

Transport managementacross the entire network

AutomateConsolidate

NetAct Transport

Optimize: operations with

centralized management2

Simplify

Consultation forexcellent reliability

IP/MPLS

WDM

CET

Maximize resources with

Multi-Layer Optimization

Minimize costs in your

cell site solution

Combined radio andtransport system

Ethernet

Full packet

mobile backhaul

Picture2:EfficiencywithfullpacketMobileBackhaulsolutionacrosstheentirenetwork

2) Optimize operations with centralized management

Asecondandoverarchingpointiscommonma-

nagementforbackhaulamongotherpartsofthe

network.Ourend-to-endtransportmanagementof

IP/MPLS,CarrierEthernet,microwave,opticaland

accessnetworksimprovesoperationalefficiencyby

enablingdatasharingbetweendifferentsystemsand

processesacrossaserviceproviderswholenetwork.Easyapplicationmanagementcanleadtocostsavings.

Forexample,amid-sizedserviceprovidercanreduce

itstransportconfigurationrelatedannualOPEXbyup

to80%byharmonizingthetransportconnectivity

management.Optimizingbackhaulsolutionsisnota

onesizefitsallexercise.

3) Maximize resources with Multi-Layer Optimization

Aconsultativeapproachisneededtoprovidethe

bestresilience,end-to-endtimesynchronisationover

packets,ahardqualityofserviceandexcellentreliability

capabilities.Foraccuratetimingoverpacketsourso-

lutionprovidessimplifiedandcostefficientnetworksynchronisationfortodaysHSPA(high-speedpacket

access),HSPAevolutionandfutureLTEnetworks.

Notleast,optimalselectionoftransporttechnologies

suchasIP,Ethernetandopticalacrossthebackhaul

networkisakeyconsideration.OurconsultativeMulti-

layerOptimization(MLO)serviceisanewwaytotune

networksthatexamineseverycornerofnetworkin-

frastructureandoperations.Transportcostsavingsof

30%canberealized.

Backhaulinaction:customersspeak

Withmorethan600customersformobilebackhaulsolutionsinmorethan100countries,wehavemany

successfuldeploymentswheregreatlyimproved

efficiencyandenrichedcustomerexperiencehave

beenreported.AserviceproviderinMalaysiawith

morethan10millionsubscribershasmovedtoafull

IPnetworkwithourmobilebackhaulsolution.We

helpedtheproviderbuildfuture-proofpacketback-

haulforoptimaltransportofHSPAandtopreparefor

LTEservices.ItissavingagreatdealofOPEXnot

onlyintransportcostsbutalsoinstaffeffort,whichaccountsforabout20%oftechnicaloperations.An-

otherexampleistheserviceoperatorChunghwaTel-

ecominTaiwan,whichcreatednewwirelesshigh-

speedInternetserviceswith60%lowertransport

costsusingourmobilebackhaulsolution.Thebal-

ancebetweencostandcapacityhasenabledthepro-

vidertooffermobilebroadbanddataservicesandan

enrichedcustomerexperienceandhasalsomade

thenetworkmoreprofitable.

Conclusion:therightstrategicpartnertoprepareyourmobilebackhaulforLTE

Formanyserviceproviders,movingtoahighspeed

packetaccessnetworkjustdoesnotmakebusiness

sensewherebackhaulremainsonTDMleasedline

architecture.Thewayforwardwillinvolveagooddeal

ofmodellingtoascertaintherelativemeritsof,forex-

ample,ahybridnetwork,leasedEthernetorafull

self-buildcarrierEthernetbackhaulnetworkbuta

simplified,unifiedpacket-basednetworkhastobethe

ultimateaim.Ourmobilebackhaulsolutionovercomes

theobstaclestominimisingcostandwillstandthetest

oftime.Astrongconsultativeapproach,integration

expertiseandportfoliobreadthtocreateoptimised

backhaulsolutionmakesustherightstrategicpartnertobuildupthemobilebackhaulpowerbehindLTE.

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