Network Architecture Work in ITU Focus Group IMT-2020
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The document outlines a comprehensive analysis of architectural gaps and requirements for the IMT-2020 network framework, identifying 19 gaps in the existing architecture and providing recommendations for improvement across various network operations. It includes high-level architecture diagrams and emphasizes softwarization, network slicing, and modular function designs to meet diverse service demands. Future considerations and evolving technologies are also discussed, aiming to facilitate the development and deployment of advanced network capabilities.
Network Architecture Work in ITU Focus Group IMT-2020
- 2. 5W1H of Architecture Work Gap Analysis (phase 1) : 19 gaps in architecture Draft Recommendations (phase 2) : Framework and Requirements High-level architecture group with all FG members San Diego, Torino, Geneva, Beijing, Seoul, Palo Alto June 2015 ~ December 2016 To define IMT-2020 architecture from network perspective 8 face-to-face meetings and multiple conference calls W H W W W W
- 3. Phase 1 : Gap Analysis (1/2) 19 architectural gaps Various bandwidth/data-rates demands Complex connectivity model Application-aware and distributed network architecture Signalling complexity in massive MTC Increasing service availability Signalling to reduce end-to-end complexity End-to-end network latency model Mobile network optimized softwarization architecture Data plane programmability
- 4. Phase 1 : Gap Analysis (2/2) 19 architectural gaps (cont’d) End-to-end QoS framework Energy efficiency Enhancement of privacy and security Enhancement identity management Multi-RAT connectivity Fixed mobile convergence Flexible mobility Mobility management for distributed flat network End-to-end network management in a multi-domain environment OAM protocols
- 5. Requirements from service points of view Enhanced mobile broadband services Enhanced massive machine type communications Ultra-reliable and low latency communication services Requirements from network operation point of view Network flexibility and programmability Fixed-mobile convergence Enhance mobility management Scalability Network capability exposure Authentication Phase 2 : IMT-2020 Requirements (1/2)
- 6. Requirements from network operation point of view (cont’d) Flexible signaling Numbering, naming and addressing QoS Control Context awareness Profile management (User, Device, etc.) Network management Accounting and charging Interworking Security … Phase 2 : IMT-2020 Requirements (2/2)
- 7. Phase 2 : IMT-2020 Framework (1/3) IMT-2020 slice life-cycle management Slice instances (eMBB, CritC, etc.) Management and Orchestration Plane (including slice templates) Control Plane Data Plane Service Plane Resources Applications Softwarization is embedded across overall layers by leveraging SDN, NFV, data plane programmability, cloud computing, etc. … Control Plane Data Plane Service Plane M G M T Applications Resources Control Plane Data Plane Service Plane M G M T Resources Instance #1 Control Plane Data Plane Service Plane M G M T Applications Resources Instance #2 Instance #n Conceptual IMT-2020 non-radio network architecture
- 8. Phase 2 : IMT-2020 Framework (2/3) IMT-2020 Architecture Diagrams
- 9. Multiple access technologies (IMT-2020, IMT, WiFi, and fixed networks) with access agnostic common core network Separation of control plane (CP) and user plane (UP) functions, allowing independent scalability and evolution Distributed flat network allowing flexible deployment of CP/UP functions Converged data plane functions (IP flow management, Multi-RAT coordination, etc.) Unified control functions (e.g. authentication) at the core with some functions at the edge Modular function design to enable flexible network (e.g. separation of MM and SM) Architecture to support diverse service requirements Different mobility and diverse end-to-end QoS (data rate, reliability, latency etc.) requirements Softwarization everywhere leveraging existing tools such as SDN and NFV End-to-end network slicing to provide dedicated logical networks with customer (or service) specific functionality; network capability exposure Edge cloud support (MEC), distributed content and services Phase 2 : IMT-2020 Framework (3/3)
- 10. Question # Question title A/13 IMT-2020: Network requirements & functional architecture B/13 NGN evolution with innovative technologies including SDN and NFV C/13 Software-defined networking, network slicing and orchestration D/13 QoS aspects including IMT-2020 networks E/13 Upcoming network technologies for IMT-2020 & Future Networks F/13 Fixed-Mobile Convergence including IMT-2020 G/13 Knowledge-centric trustworthy networking and services H/13 Innovative services scenarios, deployment models and migration issues based on Future Networks I/13 Applying networks of future and innovation in developing countries J/13 Big data driven networking (bDDN) and Deep packet inspection (DPI) K/13 Requirements, ecosystem, and general capabilities for cloud computing and big data L/13 Functional architecture for cloud computing and big data M/13 End-to-end Cloud computing management and security Next Step! WP: IMT-2020 Networks & Systems
- 11. Q & A