2022-03-04-中国移动-6G基于服务的RAN白皮书（英）_20页_1mb

报告摘要

5G Evolution: 5G core network adopted service-based architecture (SBA) to support diverse services and IoT, but research on SBA for RAN (Radio Access Network) is still in early stages.
Need for SB-RAN: To enhance network adaptability for future uncertain services, the white paper argues that performance concerns shouldn't hinder exploration of SB-RAN, as performance gains can be offset by system improvements; further cloud-native and chip tech advancements will mitigate losses.
Drivers: Focus on scenario adaptability rather than ultimate air interface performance; enable customization, efficient resource utilization, and intelligent service orchestration across network layers.

Levels of Evolution:
- Level 1: Direct communication between RAN and CN via service-based control plane interfaces.
- Level 2: Optimization of end-to-end procedures through micro-service-based RAN control plane.
- Level 3: Flexible cross-layer transmission with service-based user plane (UP).
- Level 4: Integration of DOICT (Data, Operation, Information, and Communication Technologies) including clouds, edge computing, AI, and security.
- Level 5: User Equipment (UE) providing and sharing its own services.
Design Principles:
- Define services based on external requirements (including CN, devices, UEs).
- Ensure "loose coupling & high cohesion".
- Data security and optimized data flow management (Data Processing Order and Packet Format Definition).

Infrastructure Layer: Cloud Native (micro-services, containers, serverless), Virtualization, Heterogeneous Computing (GPU, FPGA).
Network Function Layer: Service definition, Service-based Interface, Data security, Data collection mechanism.
Orchestration and Management: Open system (like ONAP), Hierarchical domains, Service Orchestration, Service Control.

Service Definition: Need for balance and feasible algorithm for service splitting.
Network Performance: GPPP strips capabilities but offers lower performance compared to dedicated hardware.
Testability & Interoperability: Multi-vendor issues requiring tighter collaboration.
Energy Efficiency: Generic servers may consume significantly more power than specialized hardware.
Hardware Abstraction & Virtualization: Requires optimization across diverse hardware types.
Network Security: Risks from data exposure between services.
Initial Cost: Not yet significant; cost advantage may appear at scale.
Standardization: Existing processes (like 3GPP Releases) are too slow for agile development required by SB-RAN.

Vertical Industries: Provide lightweight, feature-rich services tailored to industry needs, adaptable to cloud deployment.
Individual Users: Offer users customized service capabilities, possibly edge-deployed AI-based features.

Proposed "Standardization + Open Source + Deployment" collaborative approach to accelerate development and reduce time-to-market for advanced features (referenced previous timeline diagrams).

SB-RAN is deemed an inevitable evolution step enabled by cloud and its architecture. Co-existence between integrated and open (white-box hardware + open source) modes may persist. Collaboration industry-wide is crucial for promoting maturity and prosperity.

展开完整摘要