< VoLTE > New horizon for voice revenue Faisal Mobarak Core Network Planning Grameenphone
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< VoLTE >New horizon for voice revenue
FaisalMobarakCoreNetworkPlanning
Grameenphone
VoLTE,anacronymfor Voice over LTE,whichisbasedonthe IPMultimediaSubsystem (IMS)network,withspecificprofiles forcontrolandmediaplanesofvoiceserviceon LTE definedby GSMA inPRDIR.92. Thisapproachresults inthevoiceservice(controlandmediaplanes) beingdeliveredasdataflowswithintheLTEdatabearer.
Thismeansthatthereisnodependency on(orultimately,requirementfor)thelegacycircuit-switchedvoicenetworktobemaintained.VoLTEhasupto3timesmorevoiceanddatacapacitythan3GUMTSandupto6timesmorethan2GGSM.Furthermore,itfreesupbandwidthbecauseVoLTE’s packets headers aresmallerthanthoseofunoptimized VoIP/LTE.
WhatisVoLTE?
q InMay2014, Singtel introducedtheworld's firstcommercial"full-featured"VoLTEserviceinSingapore,initiallyonly incombinationwiththe GalaxyNote3.
q InJune2014, KT showcased theworld’s firstcross-border roamingservices basedonVoiceoverLTE.The SouthKorean operator partneredwith ChinaMobile todevelopVoLTEroamingservices.
q InOctober2014,ChinaMobile, KPN and iBasis havesuccessfully implemented thefirstinternationalVoLTEroamingbetweenmobileoperatorsbasedonIMSlocalbreakoutarchitecturewithahomeroutingsystems.
q InNovember2014, Verizon and AT&T haveannounced thecompanies areenablingVoLTE-to-VoLTEconnections betweentheirrespectivecustomers.VoLTEinteroperabilitybetweenVerizonandAT&Tcustomersisexpectedtobeavailablein2015.Testinganddesignarebeingdonebetweenbothcompanies usingthirdpartynetworkssuch asAlcatel-Lucent.
q In11July 2015,SEATELCambodiahaveannounced theworld'sfirstcommercial100%VoLTEservicewithout2G/3GinCambodia.
q On16September2015, Telstra announced thattheyhadstartedenablingVoLTEacrossitsnetwork,includingcallingto NationalBroadbandNetwork andbusiness andenterpriseserviceswith HD handsets.
HistoryofVoLTE
CurrentVoLTEOperator
CurrentVoLTEHandsets
VoLTEArchitecture
MME– MobilityManagementEntityHSS– HomeSubscriberServerPCRF– PolicyandChargingRulesFunctionCSCF– CallsessionControlFunctionBGCF– BreakoutGatewayControlFunctionMGCF– MediaGatewayControlFunctionMRF– MediaResourceFunction
VoLTEDeploymentChallenges
q VoLTECore&Handset:Thesuccessful rolloutofthehighdefinitionHDvoiceandvideo callingservicethatpromises highqualitydataandclearervoicecallsrequiresVoLTEtechnologytobesimultaneously availablewithinthemobile networkcoreaswellasinmobilehandsets.Atthispoint,mostmobile operators’coreinfrastructuresarenotfully equipped tosimultaneously support circuit-switchedandpacketvoice.Inaddition, VoLTE-enabledhandsets arenotwidelyavailabletoday.
q Economy:VoLTEpromises tomovewirelesscallsfromthelegacycircuit-switchednetworktotheall-IP-basedLTEnetwork,buttheformidabletaskofsupporting bothswitched-circuit andpacket-basedtechnologies isnoteconomicalformobile operatorsinmarketswhereLTEisnotyetdeployed.
q Roaming:MobileoperatorshavenotcompletelyfleshedoutVoLTEcallinteroperabilityissues tosupportcustomerswhoareroaming.
q LTE&SmallCelldeployment:VoLTE’s successful deployment depends heavilyonnationwidedeployment ofLTEtechnologyandtheadoptionofLTE-basedsmallcellsforin-building voiceenhancements.Atthispoint,theadoptionofLTE-basedsmallcellsforresidentialandenterpriseapplicationsisstillverylow.
VoLTEMigrationScenario
VoLTE2014
LTEDataSinceDec-2010
CSFBSinceDec-2011
TheOpponent:OTTVoIP
OTTVoIPvsVoLTE
OTTVoIPvsVoLTENSNSmartLabs recentlytestedboth,OTTVoIPandVoLTEandfound thatinall5measuredKPIsVoLTEisbetter:
1.SmartphonebatteryuseVoLTEclientsconsumed approximately40%lessthanOTTVoIPclients.
2.DataconnectionsOTTVoIPclientsgeneratedupto10xmoredataconnections inthemobile networkthanaVoLTEclientduringacall.
3.Datavolume/throughputMostOTTVoIPapplications requiredbetween20%and40%morethroughputthanVoLTEclientsduringactivecallstoachievethisqualitylevel,althoughoneOTTVoIPapplicationshowedexceptionalperformanceandcameclosetoVoLTE.Overalldatavolumeconsumedoveraperiodoftime,including amixofactiveandstand-byperiods, resultedinatleast50%lowerconsumption forVoLTEthanks toitsmoreefficientbehavior duringstand-by.
4.SignalingloadTypicaldefaultOTTVoIPkeep-alivepatternsactivatedduringstandbycreatedbetween100%and200%highersignalingloadonLTEnetworks comparedwithVoLTE.
5.Mouth-to-earDelayTheVoLTEclientexhibited upto94%lowermouth- to-eardelaycomparedtoOTTVoIP.
OTTVoIPvsVoLTENSNSmartLabsreportshowed clearadvantagestoVoLTEinbattery,bandwidth andsignaling consumption.
Thesetests,however,wereconductedunderidealradioconditionswithnonetworkload.TheSmartLabsteamwascuriouswhattheresultswouldbewithamorerealisticscenario.Tofindout,theteamtestedbothservicesagain–butthistimeplacedthesystemundervarious non-GuaranteedBitRate(GBR)loads, including best-effortservicessuchasfiledownloads, e-mailandInternetbrowsing,andwithpoorradioconditions.ItturnsoutthatVoLTEvoicequalityisnotaffectedatallbynon-GBRtraffic
RevenueChallengeforMNO’s
q LargeInvestmentinLTEinfrastructure§ InvestmentRecoveryLargelyviaBroadbandDataPlans
q ButRevenueneedstogrowBeyondDataPlans§ SupplementviaVoLTE,RCS,VAS
NewRevenueStreamonVoLTE1.Yougainmorecapacityfordataandvoice,usingexistingspectrum.A VoLTEnetwork hasupto3timesmorevoiceanddatacapacitythan3GUMTS— andupto6timesmorethan2GGSM— andthatextracapacityhelpsyousellmoredataservices. Nearlyeverybody understood thatpart.Whatmostdidn’tknow isthatVoLTE’s packetheadersaresmallerthanunoptimized VoIP/LTE,sothatmorebandwidth isavailablefordataservices.Forinstance,inacellwith200VoLTEcalls,4.4Mbpsisfreedupfordataservices.
2.VoLTEencouragesyourcustomerstousemoredata.ForgetaboutchargingmoreforvoiceorRCS. Rather,VoLTEallowsyourenterpriseandconsumercustomerstoeasilyuse4GLTEdataservicesbymaximizingtheirtimeonLTE.ThisdifferencehelpsbusinessemployeesstayconnectedandworkatLTEspeeds. Forexample,theycankeeptheirexistinglaptoportablet,tetheritusingWiFi orBluetoothtotheirVoLTEsmartphone,andtalk&workanywhere,withouttheolddeskphone’s limitationsorongoingoperationalcosts.Consumerscanmulti-task,talkingandbrowsingsimultaneously.Asaresult,VoLTEfitsperfectlyintotoday’sdemandforfastermobilebroadband.
3.YoucanofferrichIPcommunicationsrightnow,includingvideocallingandcontentsharing.Videoprovidesengagementandimmediacy.It’saseasytouseasvoiceormessaging,soyourcustomerscanuseitforclosingsalescallwithoutthehasslesorvariableclarityofOTTvideo. Andcontentsharinghelpsyourcustomersusemedia(files,pictures,videos,location,etc.)justassimplyandbroadlyastexting. InsteadofheadingovertoemailorDropBox, simplymovethecontentwithinthecallitself,whetherit’stoyour fishingbuddyortoyourconferencecall.
4.VoLTEsetsthestagefordistinctiveappsandservices.Youcanalsodevelopafullportfolioofdifferentiatedapplicationsandservicesthatgiveyouacompetitiveedge.Forexample,multi-deviceservicesofferanattractivedifferentiator.Theymakesubscribers’IPcommunicationsaccessibleandconsistentfromanysuitabledevice,suchasatablet,evenwhentheirsmartphoneisn’twithinreach.
MNO’sOpportunity:UnifyingtheUX
MNO’sOpportunity:ServiceInnovation
Thanks for Listening … enjoy bdNOG4
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