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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
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