This paper explores the road to vastly improving the broadband connectivity
in future 6G wireless systems. Different categories of use cases are
considered, with peak data rates up to 1 Tbps. Several categories of enablers
at the infrastructure, spectrum, and protocol/algorithmic levels are required
to realize the intended broadband connectivity goals in 6G. At the
infrastructure level, we consider ultra-massive MIMO technology (possibly
implemented using holographic radio), intelligent reflecting surfaces,
user-centric cell-free networking, integrated access and backhaul, and
integrated space and terrestrial networks. At the spectrum level, the network
must seamlessly utilize sub-6 GHz bands for coverage and spatial multiplexing
of many devices, while higher bands will be mainly used for pushing the peak
rates of point-to-point links. Finally, at the protocol/algorithmic level, the
enablers include improved coding, modulation, and waveforms to achieve lower
latency, higher reliability, and reduced complexity.

本文探讨了未来 6G 无线系统中实现显著提高的宽带连接性的途径，需要在基础设施、频谱、协议 / 算法三个方面进行支持。在基础设施水平上，需要考虑超大规模 MIMO 技术、智能反射面、用户中心的无小区网络、集成接入和回程以及集成空间和地面网络；在频谱水平上，需要无缝利用亚 6 GHz 频段进行覆盖和多设备空间复用，而更高频段则主要用于推动点对点链接的峰值速率；最后，在协议 / 算法水平上，需要改进编码、调制和波形以实现更低的延迟、更高的可靠性和更简洁。

实现百万兆位每秒的目标：6G 中的宽带连接

Scoring the Terabit/s Goal:Broadband Connectivity in 6G

This white paper explores the road to implementing broadband connectivity in
future 6G wireless systems. Different categories of use cases are considered,
from extreme capacity with peak data rates up to 1 Tbps, to raising the typical
data rates by orders-of-magnitude, to support broadband connectivity at railway
speeds up to 1000 km/h. To achieve these goals, not only the terrestrial
networks will be evolved but they will also be integrated with satellite
networks, all facilitating autonomous systems and various interconnected
structures. We believe that several categories of enablers at the
infrastructure, spectrum, and protocol/ algorithmic levels are required to
realize the intended broadband connectivity goals in 6G. At the infrastructure
level, we consider ultra-massive MIMO technology (possibly implemented using
holographic radio), intelligent reflecting surfaces, user-centric and scalable
cell-free networking, integrated access and backhaul, and integrated space and
terrestrial networks. At the spectrum level, the network must seamlessly
utilize sub-6 GHz bands for coverage and spatial multiplexing of many devices,
while higher bands will be used for pushing the peak rates of point-to-point
links. The latter path will lead to THz communications complemented by visible
light communications in specific scenarios. At the protocol/algorithmic level,
the enablers include improved coding, modulation, and waveforms to achieve
lower latencies, higher reliability, and reduced complexity. Different options
will be needed to optimally support different use cases. The resource
efficiency can be further improved by using various combinations of full-duplex
radios, interference management based on rate-splitting, machine-learning-based
optimization, coded caching, and broadcasting.

本白皮书探讨了实施未来 6G 无线系统中宽带连接的道路。为了实现这些目标，需要在基础设施、频谱和协议 / 算法三个层面上进行改进，包括超大规模 MIMO 技术、智能反射表面、基于用户的无小区网络、协议、算法方面的改进以及各种覆盖和空间多路复用。在协议 / 算法层面上，需要改进编码、调制和波形，以实现更低的延迟、更高的可靠性和更低的复杂度。同时可通过全双工无线电、基于速率分割的干扰管理、机器学习等方式进一步提高资源利用效率。