NB-IoT Connecting the IoT with ARM

WHITEPAPERCopyright©2017ARMLimited.Allrightsreserved.TheARMlogoisaregisteredtrademarkofARMLtd.AllothertrademarksarethepropertyoftheirrespectiveownersandareacknowledgedPage1of10NB-IoT:ConnectingtheIoTwithARMWHITEPAPERCopyright©2017ARMLimited.Allrightsreserved.TheARMlogoisaregisteredtrademarkofARMLtd.AllothertrademarksarethepropertyoftheirrespectiveownersandareacknowledgedPage2of10TableofContentsIntroduction...........................................................................................................3NB-IoT:Pavingtherouteto5GIoT.........................................................................4TheIoTconnectedMCU.........................................................................................4Cortex-M:Ultra-low-powerenablingNB-IoT..........................................................6TrustZoneforARMv8-M.........................................................................................................................6PowerfulDSPSingleInstructionMultipleDataInstructions......................................................7CoprocessorInterfaceforHardwareAcceleration.........................................................................7SummaryofCortex-M33.........................................................................................................................8ProcessingrequirementsofNB-IoT........................................................................8Cordio-NNB-IoTIP...............................................................................................10Summary..............................................................................................................10WHITEPAPERCopyright©2017ARMLimited.Allrightsreserved.TheARMlogoisaregisteredtrademarkofARMLtd.AllothertrademarksarethepropertyoftheirrespectiveownersandareacknowledgedPage3of10IntroductionAworldwhereeverythingconnects.Billionsofsensorsconnectseamlesslytocloudbasedserviceswhichinturndrivenewlevelsofefficiency,newbusinessesandnewopportunities,thisisthevisionofhowtheInternetofThings(IoT)standstotransformthewaywelive,workandinteractwiththeworldaroundus.Deliveringconnectivitythatscalestobillionsofdevicesbringsmanychallenges.Thesocalled‘5G’connectedworldpromisestobringalways-onubiquitouscoverage,unlimitedbandwidthandmorecapacitytoouralreadystressedwirelessnetworks.AccordingtotheEricssonMobilityReport,by2022itispredictedthattherewillbeover18billionIoTconnecteddevices,farsurpassingeventhenumbersmartphoneconnectionsbymorethan2:1.TheroleofthewirelessnetworkiskeyinenablingtheIoT.Traditionallybuiltforvoicein2Gservicesthenformobilebroadbandin3Gand4Gnetworkswenowfacethechallengeofbuildingforscale,coverageandultra-efficientlowpower.Connectingasensorrepresentsaverydifferentchallengetoconnectingasmartphone.Todothiswelooktowardslowpower,wideareanetworks(LPWAN)todeliverconnectivity.Standardsarestillevolving,butkeytothisisanewlyratifiedtechnologycalledNarrowbandIoT(NB-IoT)whichwasratifiedbytheglobaltelecomsstandardsbodywhichwasbehind3Gand4Gstandards,namely3GPP.Foranystandardtobesuccessfulitmustbeopen,allowingdevicevendorstobuildandinteroperateandinturndrivethriving,multi-vendormarkets.NB-IoTisexactlythatandpromisestobringaplethoraofconnecteddevicesinusecasesasfarrangingassmartcity,agriculture,medical,automotiveaswellasmoretraditionalconsumerclassdevicesandwearables.TodrivethisbreadthrequiresarangeofsemiconductorsolutionsthatembedNB-IoTconnectivityintotheirheart.Cellularnetworkoperatorshavetheirroletoplayaswell.MovingfromasmartphonecentricbusinessmodeltoanIoToneisnotasimplestep.StreamliningofcertificationandapprovalofIoTdevicesontotheirnetworkswillbekey,loweringbarrierstoentryanddrivingdiversityandchoice.HighlyefficientnetworksthatdeliverwideareacoverageforthedisparateIoTusecasesisachallengeforoperatorsaswellasensuringsecurityisbuiltintothenetworkfromthegetgo.TrustisessentialinIoT,andwithtrustcomesopportunity.WithARM®TrustZone®technologybuiltintotheheartoftheconnecteddevicesandLPWANnetworks,weareensuringthatdataissecure,devicesaretrustedandthatnetworksareabletorunandscaleefficiently.WHITEPAPERCopyright©2017ARMLimited.Allrightsreserved.TheARMlogoisaregisteredtrademarkofARMLtd.AllothertrademarksarethepropertyoftheirrespectiveownersandareacknowledgedPage4of10NB-IoT:Pavingtherouteto5GIoTThe5Gvisionsetsouttoenhanceexistingwirelessnetworksinthreekeyways.Firstly,theabilitytodelivermassivemobilebroadbandormMBB.Drivingnetworkstodeliveringubiquitousgigabitconnectivityisessentialindrivingnewmobileusecasessuchasaugmentedreality(AR)andvirtualreality(VR)thatdemandhighresolution,engaginguserinterfaces(UI’s)toenrichtheuserexperience.Secondlyismassivemachinetypecommunications(mMTC).ThisenhancementsetsouttoprovidetheplumbingfortheIoTandtheabilityfornetworkstomassivelyscaleandconnectthebillionsofsensorstocloudbasedservices.Finally,buildingonmMTCwehaveultra-reliablemachinetypecommunicationsoruMTCwhichisaimedatenablinganewbreedofultra-lowlatencyapplicationssuchasindustrialcontrol,automotiveandremotehealthcaretonamea