[论文解读] A Vision of 6G Wireless Systems: Applications, Trends, Technologies, and Open Research Problems

Walid Saad, Mehdi Bennis+1 more|arXiv (Cornell University)|Feb 26, 2019

Advanced Wireless Communication Technologies参考文献 18被引用 244

一句话总结

本文提出了面向未来的6G愿景，概述推动应用、新服务等级、使能技术以及带有开放问题的研究议程。它认为6G将汇聚通信、计算、控制、定位与感知（3CLS），并超越高频带进入 LIS、AI驱动的网络与跨域整合。

ABSTRACT

The ongoing deployment of 5G cellular systems is continuously exposing the inherent limitations of this system, compared to its original premise as an enabler for Internet of Everything applications. These 5G drawbacks are currently spurring worldwide activities focused on defining the next-generation 6G wireless system that can truly integrate far-reaching applications ranging from autonomous systems to extended reality and haptics. Despite recent 6G initiatives1, the fundamental architectural and performance components of the system remain largely undefined. In this paper, we present a holistic, forward-looking vision that defines the tenets of a 6G system. We opine that 6G will not be a mere exploration of more spectrum at high-frequency bands, but it will rather be a convergence of upcoming technological trends driven by exciting, underlying services. In this regard, we first identify the primary drivers of 6G systems, in terms of applications and accompanying technological trends. Then, we propose a new set of service classes and expose their target 6G performance requirements. We then identify the enabling technologies for the introduced 6G services and outline a comprehensive research agenda that leverages those technologies. We conclude by providing concrete recommendations for the roadmap toward 6G. Ultimately, the intent of this article is to serve as a basis for stimulating more out-of-the-box research around 6G.

研究动机与目标

• 确定推动6G发展的应用及其性能需求。
• 提出覆盖速率、可靠性、时延与人因的新6G服务等级。
• 概述支撑6G的使能技术与架构变革（AI、LIS、DSN、3CLS）。
• 提供带开放问题与对6G路线图的建议的研究议程。

提出的方法

• 调研新兴的IoE应用及推动6G的技术趋势。
• 定义新服务等级及相应的性能目标。
• 讨论使能技术与架构概念（LIS、边缘AI、陆基/卫星网络一体化）。
• 提出带分类开放问题与分析框架的研究议程。

实验结果

研究问题

• RQ1 哪些应用与趋势定义6G路线图及其所需的性能目标？
• RQ2 新的6G服务等级及其目标指标是什么？
• RQ3 支撑6G 3CLS和AI驱动网络需要哪些使能技术与架构？
• RQ4 发展6G的主要开放研究问题与方向是什么？

主要发现

• 6G is envisioned to deliver up to 1 Tbps end-to-end rates with ultra-low latency and near-100% reliability, extending beyond sub-6 GHz to mmWave and THz bands.
• Introduction of new service classes like MB RLLC, mURLLC, human-centric services, and MPS to support XR, BCI, CRAS, and IoE.
• Convergence of communications, computing, control, localization, and sensing (3CLS) as a foundational 6G principle.
• Emphasis on intelligent, self-sustaining networks (SSN) with edge AI and AI-driven protocols.
• Highlighting integration of heterogeneous networks (terrestrial, airborne, satellite) and energy transfer concepts within 6G.
• Promotion of holographic radio and large intelligent surfaces (LIS) as key enabling technologies.