6G Enabling Technologies

While network operators have already started deploying commercial 5th generation (5G) networks, existing cellular technologies may lack the level of reliability, availability, and responsiveness requested by future wireless applications. For this reason, the research community at large is already defining the most promising technologies that can enable 6th generation (6G) wireless systems. We have identified three critical innovations: (1) communications at Terahertz and optical frequencies for ultra-high-speed broadband access, (2) cell-less architectures to enable ubiquitous 3D coverage, and (3) intelligent networks to simplify the management of complex networks and reduce costs. In this chapter, after summarizing envisioned use cases and corresponding Key Performance Indicators (KPIs) in the 6G ecosystem, we will review the characteristics of these innovations and speculate about whether and how they will satisfy the most stringent 6G network demands in a holistic fashion, in view of the foreseen economic, social, technological, and environmental context of the 2030 era.

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