5G Frequencies Standardization, Technologies, Channel Models and Network Deployment: Advances, Challenges, and Future Directions
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Date
2023
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Abstract
The rapid increase in data traffic caused by the proliferation of smart devices has spurred
the demand for extremely large-capacity wireless networks. Thus, faster data transmission rates
and greater spectral efficiency have become critical requirements in modern-day networks. The
ubiquitous 5G is an end-to-end network capable of accommodating billions of linked devices and
offering high-performance broadcast services due to its several enabling technologies. However, the
existing review works on 5G wireless systems examined only a subset of these enabling technologies
by providing a limited coverage of the system model, performance analysis, technology advancements,
and critical design issues, thus requiring further research directions. In order to fill this gap
and fully grasp the potential of 5G, this study comprehensively examines various aspects of 5G
technology. Specifically, a systematic and all-encompassing evaluation of the candidate 5G enabling
technologies was conducted. The evolution of 5G, the progression of wireless mobile networks,
potential use cases, channel models, applications, frequency standardization, key research issues,
and prospects are discussed extensively. Key findings from the elaborate review reveal that these
enabling technologies are critical to developing robust, flexible, dependable, and scalable 5G and
future wireless communication systems. Overall, this review is useful as a resource for wireless
communication researchers and specialists.