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5G Network Architecture and FMC

5G Network Architecture and FMCJoe Wilke, EricssonJuly 2017 National sitesDistributed sitesAccess sitesDevices / Local NWGlobal sitesApplication CloudTransportCloud InfrastructureManagement & MonetizationAccess, Mobility, Network applicationsMobileFixedNetwork SlicesAutomationActionable insightsService optimized connectivityAgilityEfficiencyEfficiencyA gilityScaleEricsson 5G core systemKey system areas Network Slicing is a key enabler supporting Separation of concern Diverging Use Cases and Requirement Multiple instantiations of same functionality Reduced TTM 5G Mobile Broadband is an evolution of current 4G MBB, but using the Service Based Architecture as basis Support possibility for diverging architectures for new services Automation and programmability important part of target architectureOverall 5G Core Architecture Strategy The 5G core standardization should define a functional Architecture where implementation technologies can be evolved and replaced over time Key principles: Prioritize interfaces to support Multi-vendor integration Scale UP and CP functionality independently Allow for a flexible deployment of UP separate from the CP Supporting authenticatio

One Network –Multiple Industries. Federated Network Slicing Service Providing operator NW Slice for hosted service VNF Business Customers Partner Operator Service NW Slice SLA Orchestration Service ... PGW CP PCRF EPC NAS S11 HSS S6a MME S10 LTE RRC LTE PDCP LTE Uu S5 ›Enables early introduction of NR through connectivity Option 3 ›UE ...

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Transcription of 5G Network Architecture and FMC

1 5G Network Architecture and FMCJoe Wilke, EricssonJuly 2017 National sitesDistributed sitesAccess sitesDevices / Local NWGlobal sitesApplication CloudTransportCloud InfrastructureManagement & MonetizationAccess, Mobility, Network applicationsMobileFixedNetwork SlicesAutomationActionable insightsService optimized connectivityAgilityEfficiencyEfficiencyA gilityScaleEricsson 5G core systemKey system areas Network Slicing is a key enabler supporting Separation of concern Diverging Use Cases and Requirement Multiple instantiations of same functionality Reduced TTM 5G Mobile Broadband is an evolution of current 4G MBB, but using the Service Based Architecture as basis Support possibility for diverging architectures for new services Automation and programmability important part of target architectureOverall 5G Core Architecture Strategy The 5G core standardization should define a functional Architecture where implementation technologies can be evolved and replaced over time Key principles.

2 Prioritize interfaces to support Multi-vendor integration Scale UP and CP functionality independently Allow for a flexible deployment of UP separate from the CP Supporting authentication for both IMSI-based and non IMSI-based identities Allows for different Network configurations in different Network slices Abstract transport layer from 3 GPP NFs5G Core Network ArchitectureKey Principles CP/UP Split NWslicing Service Based Architecture SBA5G New Concepts5G CORE Architecture overviewChanges and improvements compared to 4GS1-MMES1-US5S11 HSSPCRFGxS6aPGWSGWEPC todayMMESGiMMES1-MMES1-US11 HSSPCRFGxS6aSGiAfter CUPSSGWCPPGWCPSGWUPPGWUPM apping the EPC functions to new 5G CN functionsN3N6N7N4 UPFSMFPCFAUSFNG11 UDMN13N8N12N10 AMFN15 Access & Mobility management Function (AMF)MMEUser Plane Function (UPF)SGW UPPGW UPPolicy Control Function (PCF)PCRFS ession Management Function (SMF)SGWCPPGWCPMMEA uthentication Server Function (AUSF) and User Data Management (UDM)HSS/AAA NetworkServices/ProductsLogicalMBB NetLogicalEnterprise NetLogicalMDNN etwork slice is a logical Network serving a defined business purpose or customer, consisting of allrequired Network resources configuredtogether.

3 It is created, changed and removed by management functions. Logical Network managed by a provider Enabler for services, not a service Mobile and fixed Resources may be physical or virtual, dedicated or shared Independent/ Isolated but may share resources May integrate services from other providers,facilitating aggregation and roaming May include management functions and possible exposure of control/management to SlicesNW SliceMgmtEricsson Internal | Ericsson AB 2015 | 2015-11-06 | Page 8 Network Slice DefinitionOne Network Multiple IndustriesFederated Network SlicingService Providing operatorNW Slice forhosted serviceVNFB usiness CustomersPartner OperatorServiceNW SliceSLAO rchestrationServiceNW SliceSLAO rchestrationEnable seamless service experience and service controlvUPvCoreNW SliceService Based Architecture3 GPP TS (2017-06)Reference point representation.

4 Shows the interaction that exist between the NF services in the Network functions described by point-to-point reference point ( N11) between any two Network functions ( AMF and SMF).Service-based representation, where Network functions ( AMF) within the control plane enables other authorized Network functions to access their services UE(R)ANUPFAFAMFSMFPCFUDMDNN6N1 NRFNEFN3N2N4 AUSFN ausfNamfNsmfNpcfNnrfNnefNudmNafAMFPCFUE( R)ANUPFDNN13N7N3N6N2N4N1 AFN5 SMFN11N9 AUSFN8N12 UDMN10N14N15 Authentication Server Function (AUSF)Core Access and Mobility Management Function (AMF)Data Network (DN), operator services, Internet access or 3rd party servicesNetwork Exposure Function (NEF)NF Repository Function (NRF)Policy Control function (PCF)Session Management Function (SMF)Unified Data Management (UDM)User plane Function (UPF)Application Function (AF)User Equipment (UE)

5 The 5G Architecture is defined as service-based and the interaction between Network functions is represented in two ways. Network functions within the 5GC Control Plane shall only use service-based interfaces for their UEN2N3N6N45G RANUPFSMFAUSFN1 AMF5G CORE architectureFunctional view service-based representationAFPCFUDMNEFNamfNausfNpcfNu dmNsmfNafData Network ( operator or Internet)NRFNnrf Network Functions within the 5GC Control Plane (CP) use Service-Based Interfaces (SBI) for their interactions: A CP NF can provide one or more NF ServicesNnefAFApplication FunctionAMFA ccess and Mobility Management FunctionAUSFA uthentication Server Function NEFN etwork Exposure FunctionNRFN etwork Repository FunctionPCFP olicy Control FunctionSMFS ession Management FunctionUDMU nified Data Management UPFUser Plane FunctionNF ARequestReplyService-based interface in 5 GCServices and OperationsNF BNF Service A1 ConsumerNF Service B1 ConsumerNF Service A1 ProducerNF Service B1 ProducerSubscribeNotifyService Based Interface (SBI)

6 NF Service Operation A Control Plane Network Function can provide one or more NF Services A NF Service consist of operations based on either a request-response or a subscribe-notify model Common control protocol using HTTP based API, replacing protocols like Diameter5G EPC Architecture overviewFunctional view non-roaming RAN-CN interactionData Network ( operator or Internet)LTE/EPC UENR/EPC UES1-MMES1-USGiGxRxSxLTE + NR RANSGW/PGW UPSGW/PGW CPPCRFEPC NASS11 HSSS6aMMES10 LTE RRCLTE PDCPLTE UuS5 Enables early introduction of NR through connectivity Option 3 UE anchored to Network over LTE/EPC control plane Wide area coverage through LTE with NR as capacity boost5G Standards plan201520162017201820192020 IMT-2020 RequirementsIMT-2020 ProposalsIMT-2020 EvaluationWRCWRCWSITUIMT-2020 SpecsRel-14 Rel-13 Rel-15 Rel-16 Rel-17.

7 Study on next generation Network (technical realization, self evaluation)5G/NR Phase 15G/NR Phase 2 LTE evoLTE evoLTE evo3 GPPP hase 1: Rel-15 RAN + Core targeting first phase of deployments 2020 Phase 2: Rel-16 targeting ITU IMT-2020 submissio


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