5G_将智能手机以外的移动网络扩展到物联网（英文版）_20页_6mb

5G: Expanding Mobile Networks Beyond Smartphones into the IoT

Core Content

5G represents the next major evolution in mobile network technology, extending beyond the traditional use of smartphones to support a wide array of Internet of Things (IoT) applications. The development of 5G is part of a continuous progression from 1G to 5G, each generation enhancing connectivity capabilities significantly.

Evolution of Mobile Networks

• 1G (1980s): Analog phone systems, limited to voice communication.
• 2G (1990s): Digital phone systems with text messaging capabilities.
• 3G (2000s): Introduced data services, enabling mobile broadband.
• 4G (2010s): All IP-based mobile broadband, supporting high-speed internet on mobile devices.

5G Overview

• 5G is expected to be fully realized by 2020, with preliminary specifications in 2018.
• It will support enhanced mobile broadband, ultra-reliable low latency communications (URLLC), and massive machine-type communications (MTC).
• The standard is ambitious, aiming to meet diverse use cases from low-power IoT devices to high-throughput applications.

Main Use Cases

Enhanced Mobile Broadband (eMBB)

• Focus on high data rates and network capacity in dense environments.
• Requires network intelligence to efficiently allocate resources.
• Will complement existing mobile broadband applications with improved performance and seamless user experiences.

Ultra-Reliable and Low Latency Communications (URLLC)

• Designed for mission-critical applications such as:
  • Wireless control in industrial manufacturing
  • Remote medical surgery
  • Distribution automation in smart grids
  • Transportation safety

Massive Machine Type Communications (MTC)

• Targets massive IoT deployments, where a large number of devices communicate with minimal data.
• Requires deep coverage, high density, low data rate optimization, and long battery life (10+ years).

Key Challenges

Spectrum Allocation

• 5G will likely use three main frequency ranges:
  • Sub-1 GHz (for wide area coverage)
  • 1–6 GHz (for mid-range applications)
  • 20–30 GHz (for high-speed, high-capacity use cases)
• Spectrum reallocation is necessary, as these bands are not empty.
• Regional differences in spectrum availability will complicate the development of a global standard.

Network Infrastructure

• RAN vendors are preparing 5G air interfaces and new RATs before spectrum is released.
• 4G/LTE will continue to compete with 5G, especially with the rollout of LTE-A and LTE-A Pro.
• Early 5G systems will operate in sub-6 GHz spectrum, with mmWave still in development.
• Backhaul must support ultra-high capacity, ultra-low latency, and SDN control.

Chipset and Modem Development

• Qualcomm Snapdragon X50 (Multimode 5G NR) is expected in smartphones by 2019.
• Intel has released a 5G modem with mmWave RFIC in late 2017, but it is not true 5G NR.
• Samsung and Huawei are anticipated to announce 5G modems in the near future.
• Other chipset suppliers (e.g., MediaTek, Leadcore, Spreadtrum) are expected to announce by 2019.
• RF front end design must support both sub-6 GHz and mmWave 5G NR.

Considerations and Challenges

• 5G development is in its early stages, with standards and deployment expected to continue into 2022 and beyond.
• Technical innovation is crucial for overcoming challenges in network densification, spectrum reallocation, and infrastructure upgrades.
• 4G/LTE still has significant potential, with LTE-A and LTE-A Pro upgrades yet to be fully implemented.
• Industry use cases will drive 5G adoption more than consumer demand, as they require advanced capabilities like low latency, high reliability, and substantial security.

Key Takeaways

• The 5G standard is highly ambitious, aiming to support a broad range of use cases from low-power IoT to high-throughput applications.
• The development process is expected to occur in phases, influencing operator strategies and timelines.
• Global standardization faces challenges due to diverse spectrum assets and regional differences, making economies of scale difficult to achieve.
• Hype around 5G is growing, similar to the 3G and 4G eras, but it is essential to identify and address relevant issues for effective planning.
• Mobile network operators are still exploring LTE applications and business models, with NB-IoT and Gigabit LTE expected in the near future.

Team Involved in 5G Research and Analysis

• Ian Fogg: Senior Director, Mobile & Telecoms
• John Kendall: Associate Director Research and Analysis, Service Provider Technology
• Jack Kent: Director, Operators & Mobile Media
• Wayne Lam: Principal Analyst, Mobile Devices & Networks
• Sam Lucero: Senior Principal Analyst, M2M and IoT
• Bill Morelli: Senior Director, IT and Networking
• Stéphane Téral: Executive Director, Research and Analysis, Mobile Infrastructure & Carrier Economics
• Seth Wallis-Jones: Principal Research Analyst, Service Providers & Platforms
• Kevin Wang: Director, Semiconductor Value Chain and Mobile Devices & Networks
• Julian Watson: Senior Principal Analyst, IoT
• Richard Webb: Director, Research and Analysis, Service Provider Technology