5GvisionandD2Dcommunications

Aleksandr Ometovaleksandr.ometov@tut.fi

ELTDepartment

Whatis5G?

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Thefifthgenerationofmobiletechnology(5G)ispositionedtoaddressthedemandsandbusinesscontextsof2020andbeyond.

Howdidithappened?

• Thestandardsfor5Ghavenotyetbeenset. 3

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Listofchanges• NeedforSpeed

– X40timesfaster– i.e.100Mbpsperdevice

• Higherfrequencies– GHz

• Moredifferentdevices– +IoT,wearables,cars

• Differenttechnologies– HetNets

• Moredensedeploymentsandmobility• Newapplications/services

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Whatdowehavenowasresearchers?• WhitepapersfromIndustry– Helpinguswithproblemstatements

• Tasksfrombusinesspartners– ProjectsfromEricssonorQualcommwouldbemostprobablyimplementedinnextreleasesofLTE

• Requestsfromusers– ”Wewantnewservices!”

• Forecasts– Ciscoguysknowwhattheyaredoing.

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5Gusecases– Nokia

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Usecases– detailed• BroadbandAccessinDenseAreas

– Serviceavailabilityindensely-populated,wherethousandsofpeoplepersquarekilometerliveand/orwork

• BroadbandAccessEverywhere– 50+MbpsEverywhere(100isatarget)

• HigherUserMobility– Mobileservicesinvehicles,trainsandevenaircrafts

• MassiveInternetofThings(IoT)– Smartwearables,WSNs

• ExtremeReal-TimeCommunications– TactileInternet(thereal-timereactionthatisexpectedtobewithinsub-millisecond)

• LifelineCommunication– Naturaldisaster– nomoreinfrastructure

• Ultra-reliableCommunications– Trafficcontrol,controllablerobots,publicsafety,health

• Broadcast-likeServices– News,matches,events

5GRequirements– User– UserExperience• ConsistentUserExperience– togivewhatwasoffered• UserExperiencedDataRate• LatencyandMobility

– DeviceRequirements• OperatorControlCapabilitiesonDevices• Multi-Band-Multi-ModeSupportinDevices• ResourceandSignalingEfficiency• DevicePowerEfficiency

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5GRequirements– System– SystemPerformance• ConnectionDensity• TrafficDensity• SpectrumEfficiency• Coverage• ResourceandSignalingEfficiency

– EnhancedServices• ConnectivityTransparency• Contextualinformation– Location• Security• HighAvailability• Reliability 10

5GRequirements– Deployment– NetworkDeployment,OperationandManagement• CostEfficiency• EnergyEfficiency• EaseofInnovationandUpgrade• EaseofDeployment• FlexibilityandScalability• UltraLow-costNetworks(Ruralareas)

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Technology–Well,everythingyougotfromthepreviouslectures.

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Justarecallaboutlatency

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TactileInternetiswherelatencyiscrucial!Watchthisvideo:https://www.youtube.com/watch?v=OoeCBL_thNg

D2Dasoneoftheenablers– Directcommunicationbetweendevicescontrolledbytheinfrastructurenetwork

– Directconnectivity:• in-bandD2Dincellularnetworks(LTEDirect)• out-of-bandD2Dincellularnetworks(WiFi,BLE?)

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D2DApplications

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Cellular base station

Coverage area

Public safetyservice

Content sharing

Vehicularcommunication

Wearables

Industrial automation

Direct communication

Infrastructure communication

Emergency communication

Direct user link

Smart home

Smart parking

Public transport

Local advertisingProximal

communication

High-density environment

D2Dapplicationslist– M2Mcommunications– Relaying– Contentdistribution– Gaming– Cellularoffloading– Directconnectivity– Advertisements– Socialnetworks–Wearables

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D2Dchallenges– ProposingadequateD2D-awarescenarios• Howtosellit?

– DevelopingD2D-centricsystemarchitecture• ThenetworkcoreshouldbecapableofD2D

– DesigningefficientD2Doperationmechanisms• Wedonotwantourbatterytodrain

– PerformanceevaluationofD2Dsolutions• Profsforindustryareneeded

– LeveragingavailableD2Dbenefits• Foroperators• Forclients

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Lessonslearned• 5Gisnotsomethingscary– It’sjustanewsetoftechnologies

• D2Dwouldbeapartof5G• Trytomemorizetheusecases• Whatarethemaintargetsof5G?• WhatisthedifferencebetweenD2DandyourBluetoothlinktotransferaphoto?

• AlsousecasesforD2D18