5G网络转型（英文版）_39页

5G Network Transformation Summary

Core Content

This document, 5G Americas White Paper 5G: NETWORK TRANSFORMATION, provides an overview of the evolution and transformation of 5G networks, focusing on new technologies, architecture, and use cases that will drive the next generation of mobile communication. It outlines the key areas of standardization, core network functions, radio access network (RAN) advancements, and the potential impact of 5G on various industries and services.

Main Points

1. 5G as an Innovation Engine

• 5G is expected to be a major driver for innovation, bringing disruptive changes across industries and society.
• It introduces three key characteristics: low latency (<10ms), high throughput (Multi-Gbps), and enhanced distribution, enabling new business opportunities and services.
• The 5G architecture is designed to support a wide range of use cases, each with unique requirements in terms of data rate, latency, and mobility.

2. 5G Use Cases

The document outlines six major categories of 5G use cases, each with specific requirements and applications:

2.1 Enhanced Mobile Broadband (eMBB)

• Provides high-quality broadband access in dense areas, public transport, and general environments.
• Key sub-use cases include Hotspots, Broadband Everywhere, Public Transport, Smart Offices, and Events & Large Gatherings.

2.2 Connected Vehicles

• Focuses on Vehicle-to-Everything (V2X) communication, including V2V, V2I, V2N, and V2P.
• Requires ultra-low latency, high reliability, high mobility, and high data rate for applications such as traffic management, emergency response, and remote diagnostics.

2.3 Enhanced Multi-Media

• Aims to deliver high-quality media experiences across all devices and environments.
• Includes Live TV, On Demand TV, and Mobile TV.
• Relies on enhanced data capacity, high data rates, and broadcast/multicast capabilities.

2.4 Massive Internet of Things (Massive IoT)

• Targets low-power wide-area (LPWA) applications, supporting a massive number of devices.
• Includes Sensor Networks, Smart Grid/Utilities, Wearables, Agriculture, and Environment Monitoring.
• Requires long battery life, extended coverage, and low data rates.

2.5 Ultra Reliable Low Latency Applications (URLLC)

• Designed for critical IoT applications such as Industrial Automation, Automated Factories, Tactile Interaction, and Emergency Services.
• Demands extremely low latency (<1ms), high reliability, and real-time communication.

2.6 Fixed Wireless Access (FWA)

• Aims to provide high-speed broadband to fixed locations.
• Complements fiber infrastructure and is part of the early 5G deployments.

3. Use Case Requirements

4. Standardization Landscape

• 3GPP is the primary standards organization for 5G, with Release 15 expected to be completed by mid-2018.
• ITU defines 5G as IMT-2020 and outlines performance requirements.
• IETF plays a key role in protocol development, supporting 3GPP standards.
• 5GTF (5G Technical Forum) and KT 5G-SIG are multi-vendor groups working on early 5G trials and specifications.
• ETSI, ATIS, and OPNFV are also contributing to the development of 5G technologies and infrastructure.

5. 5G Core Architecture

• The 5G Core is based on a Service-Based Architecture (SBA), enabling flexible and scalable services.
• It supports network slicing, which allows the creation of virtual networks tailored to specific use cases.
• NFVI (Network Function Virtualization Infrastructure) is essential for managing the potentially infinite number of network slices.
• Automation, orchestration, and AI/ML will be critical in transforming network operations and business models.

6. Radio Access Network (RAN)

• The RAN includes 5G New Radio (gNB) and LTE Radios (eNBs), both connected to the NG Core.
• Layer 1 and Layer 2 improvements enable faster and more efficient communication.
• Wireless Self-Backhaul is a key enabler for providing ubiquitous wireless coverage using licensed and unlicensed spectrum, small cells, fiber, microwave, leased Ethernet, and satellite backhaul.

Conclusion

• 5G is set to transform networks through NFV, orchestration, and automation, enabling new use cases and services.
• It supports a wide range of applications, from enhanced broadband and connected vehicles to massive IoT and critical industrial automation.
• The standardization process is ongoing, with key organizations like 3GPP, ITU, and IETF playing pivotal roles.
• The 5G architecture is expected to be flexible, scalable, and highly reliable, with a focus on service-based interactions and network slicing.

Key Technologies and Innovations

• Network Function Virtualization (NFV) and Software Defined Networking (SDN) are fundamental to the 5G core.
• Network Slicing allows for the creation of virtual networks tailored to specific use cases.
• Ultra-low latency and high throughput are essential for enabling real-time applications and high-quality media delivery.
• Wireless Self-Backhaul is a key enabler for ubiquitous coverage and flexible network deployment.

References

1. 5G Use Case and Services, White Paper by 5G Americas, 29 November 2017
2. NGMN 5G White Paper, NGMN, 17 February 2015
3. The 5G Business Potential, Ericsson, February 2017
4. 5G Use Cases and Requirements White Paper by Nokia, April 2017
5. 5G Use Cases, presentation by Ericsson, 2015
6. Figure 2: Massive IoT Verticals Enabled by 5G Technologies
7. Figure 3: 3GPP Identified Key Use Cases for 5G Services & Requirements
8. Figure 4: 3GPP 5G Standardization Milestones
9. Figure 5: NG-RAN Architecture
10. KT 5G-SIG, 5G Special Interest Group
11. Verizon 5G-TF, 5G Technical Forum
12. ITU IMT-2020 5G Requirements ITU-R M [IMT-2020.TECH PERF REQ]
13. 3GPP 5G Standardization Milestones
14. 5G Americas, 3GPP, ITU, ETSI, IETF, and other industry groups