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5G Architecture Viewpoints H2020 5G PPP Infrastructure Association

This document summarizes a presentation on 5G networking given on July 11, 2017 in Geneva. The presentation covered 5G networking, functional descriptions and programmability, management and security, and network slicing. It included information on 5G architecture viewpoints, 5G networking drivers and principles, network slicing, functional layers, programmable hardware, management and orchestration, and security domains. Slides from the presentation provided more details on each of these topics.

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IMT-2020/5G workshop and demo day – 11th July 2017, Geneva 5G Architecture Viewpoints H2020 5G PPP Infrastructure Association 5G PPP 5G Architecture White Paper ( July 2016, August 2017) 5G-PPP Cognitive Network Management for 5G White Paper (March 2017) https://5g-ppp.eu/white-papers/ Prof. Alex Galis http://www.ee.ucl.ac.uk/~agalis/ a.galis@ucl.ac.uk Communications and Information Systems Group Department of Electronic & Electrical Engineering University College London, Torrington Place, London WC1E 7JE, United Kingdom
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Arpanet Rough sketch by Larry Roberts ARPAnet Plan – late 1960s – Early TestBeds
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva 5G Networking 5G Networking is driven by • an evolution in terms of higher capacity, performance and spectrum access in radio network segments; and • an evolution of native higher flexibility and programmability conversion in all non-radio 5G network segments: Fronthaul and Backhaul Networks, Access Networks, Aggregation Networks, Core Networks, Mobile Edge Networks, Edge Clouds Software Networks, Software-Defined Cloud Networks, Satellite Networks and IoT Networks.
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva 5G Networking 5G Networking is dependent logically and functionally on the followings key separation of concerns: • Serving at best high diversity types of communications (Human & Machines & Devices & Sensors & Edge Systems) with different performance attributes. • Separation of concerns between control/management/softwarization/services • Separation of concerns between logical / physical resources functions (i.e. connectivity, compute and storage resources) and network capabilities • A shift in networking and a transition form “network of entities”, as in current systems, to “network of (virtual) functions / capabilities“. As such “network (virtual) functions” are units of networking. • Network softwarization including network slicing. Hosting services executions in one (or more) Slices. Network softwarization includes functions for programmability of (1) network devices; (2) network (virtual) functions; (3) network slices; (4) network services and applications; (5) data, control, management planes. • Supporting on demand composition of network functions and network capabilities • Leveraging natively Network Softwarization technologies in all network segments and network components.
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Network Slicing End user and operational services Integrate Heterogeneous Technologies Integrate Communication and Computation Native Softwarization Physical Resources View Applications and Business Services View Infrastructure Control View
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Network Function Layer Orchestrator Business Function Layer Business Service Layer Infrastructure Layer RAN and wireless backhaul Core CloudEdge Cloud Optical Core Network Optical Metro Network Optical and Satellite Access Network Edge Cloud Network Function Repository Vertical #1 Services (e.g., Factory of the Future) Mobile broadband Services Vertical #2 Services (e.g,, Automotive) Service #1 Service #2 Service #3 Service #1 Service #2 Service #3 Service #1 Service #2 Service #3 Vertical #1 Function Repository Vertical #2 Function Repositor y Vertical #3 Function Repositor y OpticalWireless Cloud Northbound interface Operator A Network Function Repository RAN and wireless backhaul Core CloudEdge Cloud Optical Core Network Optical Metro Network Optical and Satellite Access Network Edge Cloud Northbound interface Operator BFrom Server 5G Networking Functional Layers
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Wide Area Network Resourc es & Function al Level Wireless and fixed access Edge Cloud Network Level Service Level Core/Ce ntral Cloud Network Operating System Programmable Ctrl E2E Secure Service Orchestrator Slice #1: Automotive / Factory Slice #2: IoT Recursive Model Programmabl e Ctrl (SDN-C) Programmable Ctrl AMF SMF UPF AMF UPF SMF SMF SMF SecureNetworkandServiceManagement 5G Architecture
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Optical Core Network Optical Metro Network Edge Cloud Optical Access Network Front-/Backhaul Network Radios Core Clouds Integrated System Mgmt. and Operations (E2E /Concatenated Network segments, FCAPS functionality, Network Information Management, Multi domains operations, In-network data/operations processing) Multi-Service Mgmt. Functions (Slice – Service Mapper •Resource-, Domain- and Service Orchestration, Service Information Mgmt., Network Capability Discovery) Network Clouds Applications and Business Services Fixed and Satellite Access Networks Aggregation and Core Networks Mobile Broadband, Services, IoT Services, ICT Vertical Industries Services Application & service programmability, Primitives: catalogues, monitoring, Tools: data analysis, testing and packaging Radio Access Network Common Control & Enforcement Converged Data Common Control & Enforcement Converged Data Common Control & Enforcement Converged Data Common Control & Enforcement Converged Data Converged Data Common Control & Enforcement Infrastructure Softwarization and Processes (Software and service networks provision, Apps-driven network softwarization, control, mgmt. and service planes, Network capability exposure, Optimization of costs and processes) (Virtual) Network Functions Converged DataConverged Data Common Control & Enforcement Infrastructure Control of (Virtual) Network Functions (Network softwarization, Cloud, Orchestration Mobility control, Mobile edge Computing) 5G Programmable Architecture
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva 11 Smart Network Planes - Scope and Functionality (I)Application and Business Service Plane – It defines and implements the business processes of the services along specific value chains. • A service in the 5G context is a piece of software that performs one or more functions, provides one or more APIs to applications or other services of the same or different planes to make usage of those functions, and returns one or more results. • Services can be combined with other services, or called in a serialized manner to create a new service. • An application in the 5G context is a piece of software that utilizes the underlying services to perform a function. • Application operation can be parameterized, for example, by passing certain arguments at call time, but it is meant to be a standalone piece of software; an App does not offer any interfaces to other applications or services. Integrated Network Management & Operations Plane -It enables the creation, deactivation, operation, control and coordination (orchestration) of • Dedicated management functions operating on top of a 5G E2E smart infrastructure; • The collection of resources required for managing the overall operation and coordination of individual network devices. • It guarantees the creation the dynamic, configurable, resilient, cost effective software networks It further includes E2E Network segments management, FCAPS functionality, Monitoring operations, Network Information Management, In-network data and operations processing and Multi domains management operations. 5G Planes
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva 12 Smart Network Planes - Scope and Functionality (II)Multi-Service Orchestration and Management Plane – The functions and interfaces in this plane are used to set up and manage groups of network instances and/or nodes. • More specifically, the setup consists of creating/installing/arranging/deactivation/coordinating NFs and interfaces according to the available physical and virtual resources. • It also comprises the set of functions associated with the network operations, such as fault management, performance management and configuration management. • It further includes Slice – Service Mapper functions, Resources, Domain and Service Orchestration functions, Service Information Management functions and Network Capability Discovery functions. • It also includes the lifecycle management of individual network functions and mobile network instances as a whole. In current mobile networks, this role is often performed by the Operations Support System (OSS). The idea is to enable the creation, operation, and control of multiple dedicated communication service networks running on top of a 5G E2E infrastructure. Control Plane - The collection of functions responsible for controlling one or more network functions. • Control Plane instructs network devices, network elements, and network functions with respect to processing elementary data units (packets, frames, symbols, bits, etc.) of the user/data/forwarding plane. • The control of (virtual) network functions include Control of Network (Virtual) functions, Control of Orchestration functions, Control of Mobility functions, Cloud Control functions, Mobile Edge Computing Control functions and adaptors to different enforcement functions. • The control of (virtual) network functions is generally 5G-applicable, and they are separated from the control and enforcements functions which are network segment-specific. The control plane interacts primarily with the forwarding plane and, to a lesser extent, with the management plane. Forwarding Plane / Data Plane - The collection of resources across all network devices responsible for forwarding traffic. 5G Planes
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva 13 Smart Network Planes - Scope and Functionality (V) Infrastructure Softwarization Plane – Enables the provisioning and operation of software and service networks. It facilitates the operation of end-to-end heterogeneous networking and distributed cloud platforms, including physical and logical resources and devices. It includes functions for designing, implementing, deploying, managing and maintaining network equipment, network components and/or network services by programming. It further includes functions for the provision of software and service networks, application driven network softwarization, programmability of Software Networks, dynamic deployment of new network and management services (i.e. which could be executed in data, control, management, service plane), network capability exposure, and E2E slice provisioning. It includes functions for dynamic programmability of (1) network devices; (2) network (virtual) functions; (3) network slices, (4) network services and applications; (5) Data, control, management planes. The software utilize features such as flexibility and rapidity all along the lifecycle of network equipment/components/services, in order to create conditions that enable the re-design of network and services architectures, optimize costs and processes, allow self-management and bring added value to network infrastructures. 5G Planes
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Local DCsWireless VirtualizationPHY Functions Regional DCsOptical Metro Remote DCsOptical Core VirtualizationPHY Functions VirtualizationPHY Functions PHY Inf Virtual Resources Virtual Resources Virtual Resources PHY Resources PHY Resources PHY Resources PNF VNFPNF VNF VNF VNF Virtual Transport forwarding vBBU (lower layers) vBBU (upper layers) End point End point forwarding forwarding Operational Network Services End-user services RFtoBaseband CyclePrefix&FFT Resource demapping Receive processing Decoding MAC ServiceManagement& Orchestration Inf.Management& Control Local DCs Remote/regional DC 5G Programmable Hardware
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Infrastructure AdaptorInfrastructure Adaptor VIM Physical Infrastructure WIM WIM Physical Resources Compute, Storage, Connectivity Resources Logical – Virtual Resources Compute, Storage, Connectivity Resources Slices - Grouping of Resources with Management I/Fs Compute, Storage, Connectivity Resources WIM WIMVirtual Infrastructure Managers VNF1 Gatekeeper Management Information Infrastructure Adaptor Infrastructure Abstraction and Capability Discovery Cognitive and Autonomic Orchestration Software Development Processes and Toolkit (SDK) Service Deployment and OperationDevelopment Service developer/ operator Logical Infrastructure Orchestratio nFunctionN Software Network Functions VNF2 VNF3 VNF n Network Services Management Multi Service Platform Orchestratio nFunction2 Orchestration Function1 Autonomic&Cognitive ServiceManagement • Multi /Intra Domain Level • Service Level • Infrastructure Level • Resource Level Federation Management Federation Management E2E Service Inventory E2E Service Inventory Service Operations Service Operations Infrastructure Identities Infrastructure Identities Infrastructure Monitoring Infrastructure Monitoring Slice Life Cycle Management Slice Life Cycle Management Performance Management Performance Management Passive & Active Resources Passive & Active Resources Service Performance Service Performance Service Self- Care Service Self- Care Fault Management Fault Management Service Programmability Service Programmability Configuration Management Configuration Management Orchestratio nFunctionN Orchestratio nFunction2 Orchestration FunctionN+1 Orchestratio nFunctionN Orchestratio nFunction2 Orchestration FunctionM+1 Integrated Management and Operation User Rights Management User Rights Management Autonomic&CognitiveInfrastructure ManagementandOperations RAN RAN VNF Core VNF RAN VNF Core VNF Access VNF Access Node Access VNF Access VNF Access VNF Edge or Core Data Center / Mobile clouds IoT low Power Radio 5G Radio Other Radio Fixed and Satellite Access Nodes Fixed and Satellite Access NodesCore Infrastructure Capability Services & Infrastructure Information Service & Virtual Services 5G Management and Orchestration
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Infrastructure programmability Application nApplication n HealthHealth Robotic communicationRobotic communication MediaMedia MBB BasicMBB Basic API API API Resource slices API Service slices API API API API E2EMulti-domainOrchestration I1 I3 Sl-Or I5 Orchestrator Data Center Orchestrator SDN net. Orchestrator Optical net. Orchestrator Optical net. Orchestrator Legacy net. Orchestrator Data Center I2-S I2-R Orchestrator SDN net. Resource Domains API API API API API E2E Multi-Domain
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Compound domains 2 Management domain Management domain(s) IP Domain 2 IP domain TA Management domain(s) Other UE domains Management domain Core network domain Access network domain Operator network domain User equipment domain Transport domain 3P domain USIM domain ME domain Access domain RAT 1 Serving domain Home domain Access domain RAT 2 IM domain IPS domain SD SD SD SD SD SD IP domain Tenant domains infrastructure domains MEHW domainUICC domain IP domain TA IP domain TA TATA TA IP domain IP Domain External network domain Network domain SD IP domain TA Slice Domain(s) SD SD TA Trust Anchor(s) Optional SD TA SD 5G Security Domains
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Definitions of Network Slicing & References (I) I - Slicing Resources: Active / Programmable Networks research: node operating systems & resource control frameworks (1995 -2005) (*) Federated Testbed research : Planet Lab USA (2002), PlanetLab EU (2005), OneLab EU (2007), PlanetLab Japan (2005), OpenLab EU ( 2012) GENI Slice (2008): “GENI is a shared network testbed i.e. multiple experimenters may be running multiple experiments at the same time. A GENI slice is: • The unit of isolation for experiments. • A container for resources used in an experiment. GENI experimenters add GENI resources (compute resources, network links, etc.) to slices and run experiments that use these resources. • A unit of access control. The experimenter that creates a slice can determine which project members have access to the slice i.e. are members of the slice. (*) Galis, A., Denazis, S., Brou, C., Klein, C. (ed) –”Programmable Networks for IP Service Deployment” ISBN 1-58053-745-6, pp 450, June 2004, Artech House Books, http://www.artechhouse.com/International/Books/Programmable-Networks-for-IP-Service-Deployment-1017.aspx
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Definitions of Network Slicing & References(II) ITU-T Slicing (2011) as defined in [ITU-T Y.3011], [ITUTY.3012] is the basic concept of the Network Softwarization. Slicing allows logically isolated network partitions (LINP) with a slice being considered as a unit of programmable resources such as network, computation and storage. I - Slicing Resources: Slice capabilities (2009) “Management and Service-aware Networking Architectures (MANA) for Future Internet” – A. Galis et all - Invited paper IEEE 2009 Fourth International Conference on Communications and Networking in China (ChinaCom09) 26-28 August 2009, Xi'an, China, http://www.chinacom.org/2009/index.html 3 Slices Capabilities – “Resource allocation to virtual infrastructures or slices of virtual infrastructure.” – “Dynamic creation and management of virtual infrastructures/slices of virtual infrastructure across diverse resources.” – “Dynamic mapping and deployment of a service on a virtual infrastructure/slices of virtual infrastructure.” 17 Orchestration capabilities 19 Self-functionality mechanisms 14 Self-functionality infrastructure capabilities
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Definitions of Network Slicing & References(III) II- Network Slicing : NGMN Slice capabilities (2016) - consist of 3 layers: 1) Service Instance Layer, 2) Network Slice Instance Layer, and 3) Resource layer. • The Service Instance Layer represents the services (end-user service or business services) which are to be supported. Each service is represented by a Service Instance. Typically services can be provided by the network operator or by 3rd parties. • A Network Slice Instance provides the network characteristics which are required by a Service Instance. A Network Slice Instance may also be shared across multiple Service Instances provided by the network operator. • The Network Slice Instance may be composed by none, one or more Sub-network Instances, which may be shared by another Network Slice Instance. 3GPP SA2 23.799 Study Item “Network Slicing’ 2016 ; SA5 TR 28.801Study Item “Network Slicing 2017 ONF Recommendation TR-526 “Applying SDN architecture to Network Slicing” 2016 IETF Draft draft-gdmb-netslices-intro-and-ps-02 2016- 2017 EU 5GPPP • 15 Large Scale Research projects – all based on Network Slicing (https://5g-ppp.eu) (2015- 2018+) • White Paper on 5G Architecture centered on network slicing (https://5g-ppp.eu/wp- content/uploads/2014/02/5G-PPP-5G-Architecture-WP-July-2016.pdf) (2016)
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva (Proposal) Unified Slice definitionSlice as a union of subsets of resources & NFVs at a given time (1) The Service Instance component – represents the end-user service or business services. – an instance of an end-user service or a business service that is realized within or by a NS. – would be provided by the network operator or by 3rd parties. (2) A Network Slice Instance component – represented by a set of network functions, and resources – forms a complete instantiated logical network to meet certain network characteristics required by the Service Instance(s). – provides network characteristics which are required by a Service Instance. – may also be shared across multiple Service Instances (3) Resources component – it includes: Physical, Logical & Virtual resources – Physical & Logical resources - An independently manageable partition of a physical resource, which inherits the same characteristics as the physical resource and whose capability is bound to the capability of the physical resource. It is dedicated to a Network Function or shared between a set of Network Functions; – Virtual resources - An abstraction of a physical or logical resource, which may have different characteristics from that resource, and whose capability may not be bound to the capability of that resource. (4) Slice Capability exposure component – allow 3rd parties to access via APIs information regarding services provided by the slice (e.g. connectivity information, QoS, mobility, autonomicity, etc.) – allow to dynamically customize the network characteristics for different diverse use cases within the limits set of functions by the operator. – it includes a description of the structure (and contained components) and configuration of the slice instance. Definitions of Network Slicing & References(III)
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Network Slice Usage Scenarios • Mission-critical Ultra low latency communication • Massive-connectivity machine communication (e.g. Smart metering, Smart grid and sensor networks) • Extreme QoS • Independent QoS isolation design • Independent operations and management • Independent autonomic management functionality • Independent cost and/or energy optimisation • Independent multi-topology routing • Sharing Infrastructure: Enablers for sharing infrastructure safely and efficiently (Multi-tenant) NS Scenarios
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Network Slice Representation Forwarding Network Element Network Slice 1 Tenant A Control Infrastructure Tenant B Control Infrastructure Network Slice 2 NF Network Function / Virtual NF NF1 NF2 NF4 NF3 Network Service Tenant A NF1 NF2 NF4 NF3 Network Service Tenant B Physical Network EInfrastructure NS Representation
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Network slice-specific (dedicated) control layer functionsNetwork slice-specific (dedicated) control layer functionsNetwork slice-specific (dedicated) control layer functions Network slice-specific (dedicated) management layer functions Slice MangerSlice Manger Management&Orchestration plane E2E Service Management & Orchestration EM EM Control plane Data plane Network slice-specific (dedicated) data layer functions NFV Orchestrator VNF Manager VIM Revisited ETSI NFV Framework VNF VNF VNF VNF VNF VNF VNF VNF VNF VNF VNF VNF VIM VNF Manager Slice Manger OSS/NM Slice as a union of subsets of resources & NFVs Opportunity to integrate Network Slice across almost all the layers in NFV architecture
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Management&Orchestration plane E2E Service Management & Orchestration Service plane BSS & Policies decision Applications & Services EM OSS/NM EM Control plane Shared control layer functions Data plane Network slice-specific (dedicated) control layer functions Network slice-specific (dedicated) control layer functions VNF VNF VNF VNF PNF PNF PNF Shared data layer functions PNF VNF PNF Programmable Controller VNF VNF VNFVNF NFV Orchestrator VNF Manager VIM 5G Networking
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Network Slice Life Cycle Management Instantiation Management Plane Network (Virtual) Functions Resource (Physical and Virtual) Slice Networking Orchestration Network Infrastructure Service Plane Control Plane Data Plane Embedded Softwarization Control Plane Data Plane Service Plane M G M T Instances (Service, Management, Control, and Data planes) Orchestration Slice Networking Control Plane Data Plane Service Plane M G M T Orchestration Slice Networking Control Plane Data Plane Service Plane M G M T Orchestration Slice Networking Control Plane Data Plane Service Plane M G M T Orchestration Slice Networking
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva NS Management & Operations (1) Uniform Reference NFV Model for Network Slicing (Architecture document): Describes all of the functional elements and instances of a network slice in NFV. Describes shared non-sliced network parts. Establishes the boundaries to the basic network slice operations (2) Review common scenarios / Use Cases from the requirements for operations and interactions point of view. Describes the roles (owner, operator, user) which are played by entities with single /multiple entities playing different roles. (3) Network Slice capabilities in NFV environment : – Enablers for safe, secure and efficient multi-tenancy in slices. – Methods to guarantee/manage for the end-to-end QoS of service in a slice. – Recursion: methods for NS segmentation allowing a slicing hierarchy with parent - child relationships. – Optimisation: Mapping algorithms & methods for network resources automatic selection for NS ; global resource view formed; global energy view formed; Network Slice deployed based on global resource and energy efficiency. – Monitoring status and behaviour of NS in a single and/or muti-domain NFV environment. 5) Network slice operations in an NFV environment: • Slice life cycle management including creation, activation / deactivation, protection, elasticity, extensibility, safety, sizing and scalability of the slicing model per network and per network clouds. • Slice management and operation: namely configuration, composition, monitoring, optimisation, elasticity are carried as part of the slice protocols. • E2E Slice stitching / composition in an NFV environment: having enablers and methods for efficient stitching /composition/ decomposition of slices: – vertically (service + management + control planes) and/or – horizontally (between different domains part of access, core, edge segments) and /or – vertically + horizontally.
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva NS Key Characteristics - No1 Engineering Priority in 5G “The service cannot provide optimal experience on a best-effort network”; “It is inefficient and expensive to build a separate infrastructure for each service” • NS is mainly an in-band management concept in support of a service which is coordinating/orchestrating network functions and resources at a given time. • NS is a dedicated network that is build on an infrastructure mainly composed of, but not limited to, connectivity, storage and computing. Network slices are concurrently deployed as multiple logical, self-contained and independent, partitioned network functions and resources on a common physical infrastructure in order to support well at least one service. • NS has the ability to dynamically expose and possibly negotiate the parameters that characterize an network slice. Network slices are configurable and programmable. • NS has its own operator that sees it as a complete network infrastructure and to use part of the network resources to meet stringent resource requirements. • NS is supporting tenant(s) that are strongly independent on infrastructure. • NS is introducing an additional layer of abstraction by the creation of logically or physically isolated groups of network resources and network function/virtual network functions configurations separating its behavior from the underlying physical network • NS is dynamically and non-disruptively reprovisioned.
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva CORE FIXED ACCESS Smart Cloud & Network Fabric Enabled by Programmability Including SDN Service Adapted Network Slices Enabled by Network Function Virtualization (NFV) E2N Multi-Domain Orchestration E2D coordination, conflict resolution, multi-domain information exchange RADIO ACCESS Dedicated ICT Service Network Slice Enterprise/ Vertical Business Network Slice Mobility Network Slice EDGE EDGE EDGE EDGE EDGE Smart Network Fabric: E2E Multi-Domain Network Operating System Facilities Network Abstraction, Allocate (virtual) network resources, Maintain network state, Ensure network Reliability in a multi domain environment In-band Cognitive Management METRO EDGE • Dynamically adapting the network to meet future demands requires • Creating the dynamic, configurable, resilient, cost effective network • A programmable network operating system with simple interface to the network ( smart network fabric) • Transition from network devises to network functions and virtual network functions with inbound management 5G Architecture – Concluding Remarks
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Access Transport Core Network Applications, Services, Management, Orchestration & Control, Softwarization • Slice support (slice awareness) • Control/user plane split • NFV support (possibly limited) • C-RAN/D-RAN functional splits •Tight Interworking of LTE and new radio interfaces for the 5G RAN • Multi-connectivity • Enhanced/new network access functions •CN/RAN split •New RAT for higher frequencies up to 100 GHz (e.g., access, handovers etc) •Support for mm-wave standalone and non-standalone operation • PHY numerology (TTI, waveform, coding, etc) •Security as a service • Slice support •SDN support and full exploitation of NFV •Control and user plane split •Fixed Mobile Convergence •CN/RAN split •Security as a service • Slice support (configuration mode selection, adaptation) •Decomposition and reutilization of functional blocks •Flexible placement of virtual network functions •Deployment and management of cloud facilities resources •Muti-Domain Orchestration and Life Cycle Management •Network programmability for multi-domain control management and orchestration •Security as a service •Multi- tenancy support •Open access •Fixed-Mobile Convergence •Slice support •SDN & NFV support •Heterogeneous fixed and wireless access technologies •Flexible optical transport in the metro domain •Compute and storage hardware available in aggregation nodes •Central, regional and edge clouds, cloudlets •Functional splits can vary from D- RAN to C-RAN •Control and user plane split •New fronthaul •Security as a service Mobile Edge Computing, Edge Networks • Slice support • Security as a service • Service support and programmability • Virtialization of Network Functions Satellite Networks • Slice support •Security as a service • Service support and programmability • Closed control loops • Self Management of Network (Virtual) functions • Virtualization of Network Functions • Service and Network Programmability • Hosting services executions in one (or more) Slices • Enforce required capability/capacity/security/elasticity/ adaptability/ flexibility “where and when needed • Supporting on demand composition of network functions and network capabilities • Network OS facilities 5G Networking – Summary
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Thank You 5G PPP Infrastructure Association • 5G PPP 5G Architecture White Paper ( July 2016, August 2017) • 5G-PPP Cognitive Network Management for 5G White Paper (March 2017) • https://5g-ppp.eu/white-papers/ 5GPPP EU Research Projects • 5GEx – “5G Multi-Domain Exchange” https://5g-ppp.eu/5gex/ • 5G SONATA – “Service Programming and Orchestration for Virtualized Software Networks in 5G” https://5gppp.eu/sonata/. Acknowledgement
IMT-2020/5G workshop and demo day – 11th July 2017, Geneva Thank You “Ability will never catch up with the demand for it.” Confucius

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5G Architecture Viewpoints H2020 5G PPP Infrastructure Association

  • 1.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva 5G Architecture Viewpoints H2020 5G PPP Infrastructure Association 5G PPP 5G Architecture White Paper ( July 2016, August 2017) 5G-PPP Cognitive Network Management for 5G White Paper (March 2017) https://5g-ppp.eu/white-papers/ Prof. Alex Galis http://www.ee.ucl.ac.uk/~agalis/ a.galis@ucl.ac.uk Communications and Information Systems Group Department of Electronic & Electrical Engineering University College London, Torrington Place, London WC1E 7JE, United Kingdom
  • 2.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
  • 3.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Arpanet Rough sketch by Larry Roberts ARPAnet Plan – late 1960s – Early TestBeds
  • 4.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva 5G Networking 5G Networking is driven by • an evolution in terms of higher capacity, performance and spectrum access in radio network segments; and • an evolution of native higher flexibility and programmability conversion in all non-radio 5G network segments: Fronthaul and Backhaul Networks, Access Networks, Aggregation Networks, Core Networks, Mobile Edge Networks, Edge Clouds Software Networks, Software-Defined Cloud Networks, Satellite Networks and IoT Networks.
  • 5.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva 5G Networking 5G Networking is dependent logically and functionally on the followings key separation of concerns: • Serving at best high diversity types of communications (Human & Machines & Devices & Sensors & Edge Systems) with different performance attributes. • Separation of concerns between control/management/softwarization/services • Separation of concerns between logical / physical resources functions (i.e. connectivity, compute and storage resources) and network capabilities • A shift in networking and a transition form “network of entities”, as in current systems, to “network of (virtual) functions / capabilities“. As such “network (virtual) functions” are units of networking. • Network softwarization including network slicing. Hosting services executions in one (or more) Slices. Network softwarization includes functions for programmability of (1) network devices; (2) network (virtual) functions; (3) network slices; (4) network services and applications; (5) data, control, management planes. • Supporting on demand composition of network functions and network capabilities • Leveraging natively Network Softwarization technologies in all network segments and network components.
  • 6.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Network Slicing End user and operational services Integrate Heterogeneous Technologies Integrate Communication and Computation Native Softwarization Physical Resources View Applications and Business Services View Infrastructure Control View
  • 7.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Network Function Layer Orchestrator Business Function Layer Business Service Layer Infrastructure Layer RAN and wireless backhaul Core CloudEdge Cloud Optical Core Network Optical Metro Network Optical and Satellite Access Network Edge Cloud Network Function Repository Vertical #1 Services (e.g., Factory of the Future) Mobile broadband Services Vertical #2 Services (e.g,, Automotive) Service #1 Service #2 Service #3 Service #1 Service #2 Service #3 Service #1 Service #2 Service #3 Vertical #1 Function Repository Vertical #2 Function Repositor y Vertical #3 Function Repositor y OpticalWireless Cloud Northbound interface Operator A Network Function Repository RAN and wireless backhaul Core CloudEdge Cloud Optical Core Network Optical Metro Network Optical and Satellite Access Network Edge Cloud Northbound interface Operator BFrom Server 5G Networking Functional Layers
  • 8.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Wide Area Network Resourc es & Function al Level Wireless and fixed access Edge Cloud Network Level Service Level Core/Ce ntral Cloud Network Operating System Programmable Ctrl E2E Secure Service Orchestrator Slice #1: Automotive / Factory Slice #2: IoT Recursive Model Programmabl e Ctrl (SDN-C) Programmable Ctrl AMF SMF UPF AMF UPF SMF SMF SMF SecureNetworkandServiceManagement 5G Architecture
  • 9.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
  • 10.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Optical Core Network Optical Metro Network Edge Cloud Optical Access Network Front-/Backhaul Network Radios Core Clouds Integrated System Mgmt. and Operations (E2E /Concatenated Network segments, FCAPS functionality, Network Information Management, Multi domains operations, In-network data/operations processing) Multi-Service Mgmt. Functions (Slice – Service Mapper •Resource-, Domain- and Service Orchestration, Service Information Mgmt., Network Capability Discovery) Network Clouds Applications and Business Services Fixed and Satellite Access Networks Aggregation and Core Networks Mobile Broadband, Services, IoT Services, ICT Vertical Industries Services Application & service programmability, Primitives: catalogues, monitoring, Tools: data analysis, testing and packaging Radio Access Network Common Control & Enforcement Converged Data Common Control & Enforcement Converged Data Common Control & Enforcement Converged Data Common Control & Enforcement Converged Data Converged Data Common Control & Enforcement Infrastructure Softwarization and Processes (Software and service networks provision, Apps-driven network softwarization, control, mgmt. and service planes, Network capability exposure, Optimization of costs and processes) (Virtual) Network Functions Converged DataConverged Data Common Control & Enforcement Infrastructure Control of (Virtual) Network Functions (Network softwarization, Cloud, Orchestration Mobility control, Mobile edge Computing) 5G Programmable Architecture
  • 11.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva 11 Smart Network Planes - Scope and Functionality (I)Application and Business Service Plane – It defines and implements the business processes of the services along specific value chains. • A service in the 5G context is a piece of software that performs one or more functions, provides one or more APIs to applications or other services of the same or different planes to make usage of those functions, and returns one or more results. • Services can be combined with other services, or called in a serialized manner to create a new service. • An application in the 5G context is a piece of software that utilizes the underlying services to perform a function. • Application operation can be parameterized, for example, by passing certain arguments at call time, but it is meant to be a standalone piece of software; an App does not offer any interfaces to other applications or services. Integrated Network Management & Operations Plane -It enables the creation, deactivation, operation, control and coordination (orchestration) of • Dedicated management functions operating on top of a 5G E2E smart infrastructure; • The collection of resources required for managing the overall operation and coordination of individual network devices. • It guarantees the creation the dynamic, configurable, resilient, cost effective software networks It further includes E2E Network segments management, FCAPS functionality, Monitoring operations, Network Information Management, In-network data and operations processing and Multi domains management operations. 5G Planes
  • 12.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva 12 Smart Network Planes - Scope and Functionality (II)Multi-Service Orchestration and Management Plane – The functions and interfaces in this plane are used to set up and manage groups of network instances and/or nodes. • More specifically, the setup consists of creating/installing/arranging/deactivation/coordinating NFs and interfaces according to the available physical and virtual resources. • It also comprises the set of functions associated with the network operations, such as fault management, performance management and configuration management. • It further includes Slice – Service Mapper functions, Resources, Domain and Service Orchestration functions, Service Information Management functions and Network Capability Discovery functions. • It also includes the lifecycle management of individual network functions and mobile network instances as a whole. In current mobile networks, this role is often performed by the Operations Support System (OSS). The idea is to enable the creation, operation, and control of multiple dedicated communication service networks running on top of a 5G E2E infrastructure. Control Plane - The collection of functions responsible for controlling one or more network functions. • Control Plane instructs network devices, network elements, and network functions with respect to processing elementary data units (packets, frames, symbols, bits, etc.) of the user/data/forwarding plane. • The control of (virtual) network functions include Control of Network (Virtual) functions, Control of Orchestration functions, Control of Mobility functions, Cloud Control functions, Mobile Edge Computing Control functions and adaptors to different enforcement functions. • The control of (virtual) network functions is generally 5G-applicable, and they are separated from the control and enforcements functions which are network segment-specific. The control plane interacts primarily with the forwarding plane and, to a lesser extent, with the management plane. Forwarding Plane / Data Plane - The collection of resources across all network devices responsible for forwarding traffic. 5G Planes
  • 13.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva 13 Smart Network Planes - Scope and Functionality (V) Infrastructure Softwarization Plane – Enables the provisioning and operation of software and service networks. It facilitates the operation of end-to-end heterogeneous networking and distributed cloud platforms, including physical and logical resources and devices. It includes functions for designing, implementing, deploying, managing and maintaining network equipment, network components and/or network services by programming. It further includes functions for the provision of software and service networks, application driven network softwarization, programmability of Software Networks, dynamic deployment of new network and management services (i.e. which could be executed in data, control, management, service plane), network capability exposure, and E2E slice provisioning. It includes functions for dynamic programmability of (1) network devices; (2) network (virtual) functions; (3) network slices, (4) network services and applications; (5) Data, control, management planes. The software utilize features such as flexibility and rapidity all along the lifecycle of network equipment/components/services, in order to create conditions that enable the re-design of network and services architectures, optimize costs and processes, allow self-management and bring added value to network infrastructures. 5G Planes
  • 14.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Local DCsWireless VirtualizationPHY Functions Regional DCsOptical Metro Remote DCsOptical Core VirtualizationPHY Functions VirtualizationPHY Functions PHY Inf Virtual Resources Virtual Resources Virtual Resources PHY Resources PHY Resources PHY Resources PNF VNFPNF VNF VNF VNF Virtual Transport forwarding vBBU (lower layers) vBBU (upper layers) End point End point forwarding forwarding Operational Network Services End-user services RFtoBaseband CyclePrefix&FFT Resource demapping Receive processing Decoding MAC ServiceManagement& Orchestration Inf.Management& Control Local DCs Remote/regional DC 5G Programmable Hardware
  • 15.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
  • 16.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Infrastructure AdaptorInfrastructure Adaptor VIM Physical Infrastructure WIM WIM Physical Resources Compute, Storage, Connectivity Resources Logical – Virtual Resources Compute, Storage, Connectivity Resources Slices - Grouping of Resources with Management I/Fs Compute, Storage, Connectivity Resources WIM WIMVirtual Infrastructure Managers VNF1 Gatekeeper Management Information Infrastructure Adaptor Infrastructure Abstraction and Capability Discovery Cognitive and Autonomic Orchestration Software Development Processes and Toolkit (SDK) Service Deployment and OperationDevelopment Service developer/ operator Logical Infrastructure Orchestratio nFunctionN Software Network Functions VNF2 VNF3 VNF n Network Services Management Multi Service Platform Orchestratio nFunction2 Orchestration Function1 Autonomic&Cognitive ServiceManagement • Multi /Intra Domain Level • Service Level • Infrastructure Level • Resource Level Federation Management Federation Management E2E Service Inventory E2E Service Inventory Service Operations Service Operations Infrastructure Identities Infrastructure Identities Infrastructure Monitoring Infrastructure Monitoring Slice Life Cycle Management Slice Life Cycle Management Performance Management Performance Management Passive & Active Resources Passive & Active Resources Service Performance Service Performance Service Self- Care Service Self- Care Fault Management Fault Management Service Programmability Service Programmability Configuration Management Configuration Management Orchestratio nFunctionN Orchestratio nFunction2 Orchestration FunctionN+1 Orchestratio nFunctionN Orchestratio nFunction2 Orchestration FunctionM+1 Integrated Management and Operation User Rights Management User Rights Management Autonomic&CognitiveInfrastructure ManagementandOperations RAN RAN VNF Core VNF RAN VNF Core VNF Access VNF Access Node Access VNF Access VNF Access VNF Edge or Core Data Center / Mobile clouds IoT low Power Radio 5G Radio Other Radio Fixed and Satellite Access Nodes Fixed and Satellite Access NodesCore Infrastructure Capability Services & Infrastructure Information Service & Virtual Services 5G Management and Orchestration
  • 17.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Infrastructure programmability Application nApplication n HealthHealth Robotic communicationRobotic communication MediaMedia MBB BasicMBB Basic API API API Resource slices API Service slices API API API API E2EMulti-domainOrchestration I1 I3 Sl-Or I5 Orchestrator Data Center Orchestrator SDN net. Orchestrator Optical net. Orchestrator Optical net. Orchestrator Legacy net. Orchestrator Data Center I2-S I2-R Orchestrator SDN net. Resource Domains API API API API API E2E Multi-Domain
  • 18.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Compound domains 2 Management domain Management domain(s) IP Domain 2 IP domain TA Management domain(s) Other UE domains Management domain Core network domain Access network domain Operator network domain User equipment domain Transport domain 3P domain USIM domain ME domain Access domain RAT 1 Serving domain Home domain Access domain RAT 2 IM domain IPS domain SD SD SD SD SD SD IP domain Tenant domains infrastructure domains MEHW domainUICC domain IP domain TA IP domain TA TATA TA IP domain IP Domain External network domain Network domain SD IP domain TA Slice Domain(s) SD SD TA Trust Anchor(s) Optional SD TA SD 5G Security Domains
  • 19.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
  • 20.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Definitions of Network Slicing & References (I) I - Slicing Resources: Active / Programmable Networks research: node operating systems & resource control frameworks (1995 -2005) (*) Federated Testbed research : Planet Lab USA (2002), PlanetLab EU (2005), OneLab EU (2007), PlanetLab Japan (2005), OpenLab EU ( 2012) GENI Slice (2008): “GENI is a shared network testbed i.e. multiple experimenters may be running multiple experiments at the same time. A GENI slice is: • The unit of isolation for experiments. • A container for resources used in an experiment. GENI experimenters add GENI resources (compute resources, network links, etc.) to slices and run experiments that use these resources. • A unit of access control. The experimenter that creates a slice can determine which project members have access to the slice i.e. are members of the slice. (*) Galis, A., Denazis, S., Brou, C., Klein, C. (ed) –”Programmable Networks for IP Service Deployment” ISBN 1-58053-745-6, pp 450, June 2004, Artech House Books, http://www.artechhouse.com/International/Books/Programmable-Networks-for-IP-Service-Deployment-1017.aspx
  • 21.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Definitions of Network Slicing & References(II) ITU-T Slicing (2011) as defined in [ITU-T Y.3011], [ITUTY.3012] is the basic concept of the Network Softwarization. Slicing allows logically isolated network partitions (LINP) with a slice being considered as a unit of programmable resources such as network, computation and storage. I - Slicing Resources: Slice capabilities (2009) “Management and Service-aware Networking Architectures (MANA) for Future Internet” – A. Galis et all - Invited paper IEEE 2009 Fourth International Conference on Communications and Networking in China (ChinaCom09) 26-28 August 2009, Xi'an, China, http://www.chinacom.org/2009/index.html 3 Slices Capabilities – “Resource allocation to virtual infrastructures or slices of virtual infrastructure.” – “Dynamic creation and management of virtual infrastructures/slices of virtual infrastructure across diverse resources.” – “Dynamic mapping and deployment of a service on a virtual infrastructure/slices of virtual infrastructure.” 17 Orchestration capabilities 19 Self-functionality mechanisms 14 Self-functionality infrastructure capabilities
  • 22.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Definitions of Network Slicing & References(III) II- Network Slicing : NGMN Slice capabilities (2016) - consist of 3 layers: 1) Service Instance Layer, 2) Network Slice Instance Layer, and 3) Resource layer. • The Service Instance Layer represents the services (end-user service or business services) which are to be supported. Each service is represented by a Service Instance. Typically services can be provided by the network operator or by 3rd parties. • A Network Slice Instance provides the network characteristics which are required by a Service Instance. A Network Slice Instance may also be shared across multiple Service Instances provided by the network operator. • The Network Slice Instance may be composed by none, one or more Sub-network Instances, which may be shared by another Network Slice Instance. 3GPP SA2 23.799 Study Item “Network Slicing’ 2016 ; SA5 TR 28.801Study Item “Network Slicing 2017 ONF Recommendation TR-526 “Applying SDN architecture to Network Slicing” 2016 IETF Draft draft-gdmb-netslices-intro-and-ps-02 2016- 2017 EU 5GPPP • 15 Large Scale Research projects – all based on Network Slicing (https://5g-ppp.eu) (2015- 2018+) • White Paper on 5G Architecture centered on network slicing (https://5g-ppp.eu/wp- content/uploads/2014/02/5G-PPP-5G-Architecture-WP-July-2016.pdf) (2016)
  • 23.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva (Proposal) Unified Slice definitionSlice as a union of subsets of resources & NFVs at a given time (1) The Service Instance component – represents the end-user service or business services. – an instance of an end-user service or a business service that is realized within or by a NS. – would be provided by the network operator or by 3rd parties. (2) A Network Slice Instance component – represented by a set of network functions, and resources – forms a complete instantiated logical network to meet certain network characteristics required by the Service Instance(s). – provides network characteristics which are required by a Service Instance. – may also be shared across multiple Service Instances (3) Resources component – it includes: Physical, Logical & Virtual resources – Physical & Logical resources - An independently manageable partition of a physical resource, which inherits the same characteristics as the physical resource and whose capability is bound to the capability of the physical resource. It is dedicated to a Network Function or shared between a set of Network Functions; – Virtual resources - An abstraction of a physical or logical resource, which may have different characteristics from that resource, and whose capability may not be bound to the capability of that resource. (4) Slice Capability exposure component – allow 3rd parties to access via APIs information regarding services provided by the slice (e.g. connectivity information, QoS, mobility, autonomicity, etc.) – allow to dynamically customize the network characteristics for different diverse use cases within the limits set of functions by the operator. – it includes a description of the structure (and contained components) and configuration of the slice instance. Definitions of Network Slicing & References(III)
  • 24.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Network Slice Usage Scenarios • Mission-critical Ultra low latency communication • Massive-connectivity machine communication (e.g. Smart metering, Smart grid and sensor networks) • Extreme QoS • Independent QoS isolation design • Independent operations and management • Independent autonomic management functionality • Independent cost and/or energy optimisation • Independent multi-topology routing • Sharing Infrastructure: Enablers for sharing infrastructure safely and efficiently (Multi-tenant) NS Scenarios
  • 25.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Network Slice Representation Forwarding Network Element Network Slice 1 Tenant A Control Infrastructure Tenant B Control Infrastructure Network Slice 2 NF Network Function / Virtual NF NF1 NF2 NF4 NF3 Network Service Tenant A NF1 NF2 NF4 NF3 Network Service Tenant B Physical Network EInfrastructure NS Representation
  • 26.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Network slice-specific (dedicated) control layer functionsNetwork slice-specific (dedicated) control layer functionsNetwork slice-specific (dedicated) control layer functions Network slice-specific (dedicated) management layer functions Slice MangerSlice Manger Management&Orchestration plane E2E Service Management & Orchestration EM EM Control plane Data plane Network slice-specific (dedicated) data layer functions NFV Orchestrator VNF Manager VIM Revisited ETSI NFV Framework VNF VNF VNF VNF VNF VNF VNF VNF VNF VNF VNF VNF VIM VNF Manager Slice Manger OSS/NM Slice as a union of subsets of resources & NFVs Opportunity to integrate Network Slice across almost all the layers in NFV architecture
  • 27.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Management&Orchestration plane E2E Service Management & Orchestration Service plane BSS & Policies decision Applications & Services EM OSS/NM EM Control plane Shared control layer functions Data plane Network slice-specific (dedicated) control layer functions Network slice-specific (dedicated) control layer functions VNF VNF VNF VNF PNF PNF PNF Shared data layer functions PNF VNF PNF Programmable Controller VNF VNF VNFVNF NFV Orchestrator VNF Manager VIM 5G Networking
  • 28.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Network Slice Life Cycle Management Instantiation Management Plane Network (Virtual) Functions Resource (Physical and Virtual) Slice Networking Orchestration Network Infrastructure Service Plane Control Plane Data Plane Embedded Softwarization Control Plane Data Plane Service Plane M G M T Instances (Service, Management, Control, and Data planes) Orchestration Slice Networking Control Plane Data Plane Service Plane M G M T Orchestration Slice Networking Control Plane Data Plane Service Plane M G M T Orchestration Slice Networking Control Plane Data Plane Service Plane M G M T Orchestration Slice Networking
  • 29.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva NS Management & Operations (1) Uniform Reference NFV Model for Network Slicing (Architecture document): Describes all of the functional elements and instances of a network slice in NFV. Describes shared non-sliced network parts. Establishes the boundaries to the basic network slice operations (2) Review common scenarios / Use Cases from the requirements for operations and interactions point of view. Describes the roles (owner, operator, user) which are played by entities with single /multiple entities playing different roles. (3) Network Slice capabilities in NFV environment : – Enablers for safe, secure and efficient multi-tenancy in slices. – Methods to guarantee/manage for the end-to-end QoS of service in a slice. – Recursion: methods for NS segmentation allowing a slicing hierarchy with parent - child relationships. – Optimisation: Mapping algorithms & methods for network resources automatic selection for NS ; global resource view formed; global energy view formed; Network Slice deployed based on global resource and energy efficiency. – Monitoring status and behaviour of NS in a single and/or muti-domain NFV environment. 5) Network slice operations in an NFV environment: • Slice life cycle management including creation, activation / deactivation, protection, elasticity, extensibility, safety, sizing and scalability of the slicing model per network and per network clouds. • Slice management and operation: namely configuration, composition, monitoring, optimisation, elasticity are carried as part of the slice protocols. • E2E Slice stitching / composition in an NFV environment: having enablers and methods for efficient stitching /composition/ decomposition of slices: – vertically (service + management + control planes) and/or – horizontally (between different domains part of access, core, edge segments) and /or – vertically + horizontally.
  • 30.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva NS Key Characteristics - No1 Engineering Priority in 5G “The service cannot provide optimal experience on a best-effort network”; “It is inefficient and expensive to build a separate infrastructure for each service” • NS is mainly an in-band management concept in support of a service which is coordinating/orchestrating network functions and resources at a given time. • NS is a dedicated network that is build on an infrastructure mainly composed of, but not limited to, connectivity, storage and computing. Network slices are concurrently deployed as multiple logical, self-contained and independent, partitioned network functions and resources on a common physical infrastructure in order to support well at least one service. • NS has the ability to dynamically expose and possibly negotiate the parameters that characterize an network slice. Network slices are configurable and programmable. • NS has its own operator that sees it as a complete network infrastructure and to use part of the network resources to meet stringent resource requirements. • NS is supporting tenant(s) that are strongly independent on infrastructure. • NS is introducing an additional layer of abstraction by the creation of logically or physically isolated groups of network resources and network function/virtual network functions configurations separating its behavior from the underlying physical network • NS is dynamically and non-disruptively reprovisioned.
  • 31.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Content 5G Networking 5G Functional Description and Programmability 5G Management & Security 5G Network Slicing Concluding Remarks & Acknowledgement
  • 32.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva CORE FIXED ACCESS Smart Cloud & Network Fabric Enabled by Programmability Including SDN Service Adapted Network Slices Enabled by Network Function Virtualization (NFV) E2N Multi-Domain Orchestration E2D coordination, conflict resolution, multi-domain information exchange RADIO ACCESS Dedicated ICT Service Network Slice Enterprise/ Vertical Business Network Slice Mobility Network Slice EDGE EDGE EDGE EDGE EDGE Smart Network Fabric: E2E Multi-Domain Network Operating System Facilities Network Abstraction, Allocate (virtual) network resources, Maintain network state, Ensure network Reliability in a multi domain environment In-band Cognitive Management METRO EDGE • Dynamically adapting the network to meet future demands requires • Creating the dynamic, configurable, resilient, cost effective network • A programmable network operating system with simple interface to the network ( smart network fabric) • Transition from network devises to network functions and virtual network functions with inbound management 5G Architecture – Concluding Remarks
  • 33.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Access Transport Core Network Applications, Services, Management, Orchestration & Control, Softwarization • Slice support (slice awareness) • Control/user plane split • NFV support (possibly limited) • C-RAN/D-RAN functional splits •Tight Interworking of LTE and new radio interfaces for the 5G RAN • Multi-connectivity • Enhanced/new network access functions •CN/RAN split •New RAT for higher frequencies up to 100 GHz (e.g., access, handovers etc) •Support for mm-wave standalone and non-standalone operation • PHY numerology (TTI, waveform, coding, etc) •Security as a service • Slice support •SDN support and full exploitation of NFV •Control and user plane split •Fixed Mobile Convergence •CN/RAN split •Security as a service • Slice support (configuration mode selection, adaptation) •Decomposition and reutilization of functional blocks •Flexible placement of virtual network functions •Deployment and management of cloud facilities resources •Muti-Domain Orchestration and Life Cycle Management •Network programmability for multi-domain control management and orchestration •Security as a service •Multi- tenancy support •Open access •Fixed-Mobile Convergence •Slice support •SDN & NFV support •Heterogeneous fixed and wireless access technologies •Flexible optical transport in the metro domain •Compute and storage hardware available in aggregation nodes •Central, regional and edge clouds, cloudlets •Functional splits can vary from D- RAN to C-RAN •Control and user plane split •New fronthaul •Security as a service Mobile Edge Computing, Edge Networks • Slice support • Security as a service • Service support and programmability • Virtialization of Network Functions Satellite Networks • Slice support •Security as a service • Service support and programmability • Closed control loops • Self Management of Network (Virtual) functions • Virtualization of Network Functions • Service and Network Programmability • Hosting services executions in one (or more) Slices • Enforce required capability/capacity/security/elasticity/ adaptability/ flexibility “where and when needed • Supporting on demand composition of network functions and network capabilities • Network OS facilities 5G Networking – Summary
  • 34.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Thank You 5G PPP Infrastructure Association • 5G PPP 5G Architecture White Paper ( July 2016, August 2017) • 5G-PPP Cognitive Network Management for 5G White Paper (March 2017) • https://5g-ppp.eu/white-papers/ 5GPPP EU Research Projects • 5GEx – “5G Multi-Domain Exchange” https://5g-ppp.eu/5gex/ • 5G SONATA – “Service Programming and Orchestration for Virtualized Software Networks in 5G” https://5gppp.eu/sonata/. Acknowledgement
  • 35.
    IMT-2020/5G workshop anddemo day – 11th July 2017, Geneva Thank You “Ability will never catch up with the demand for it.” Confucius