To comprehend the origin and categorization of wireless technologies, specifically the identification of 5G, a thorough understanding of IMT-2020 is necessary. The International Telecommunications Union (ITU), headquartered in Geneva, Switzerland, serves as the governing body for global communication technology matters through its divisions: Radio communications (ITU-R), Standardization (ITU-T), and Development (ITU-D). In order to establish a unified global certification, ITU-R evaluates and certifies technologies based on meticulously crafted requirements. For a technology to be designated as 5G, it must fulfill these ITU-R requirements, which are assessed during the IMT-2020 deliberations. Although the initial NR release has been finalized, the true classification of 5G is contingent upon meeting these criteria. As delineated in the IMT-2020 vision, a 5G technology must satisfy the specifications outlined in Figure 1.1. These requirements primarily revolve around three key development cases:

• Enhanced Mobile Broadband (eMBB),
• Ultra-Reliable Low Latency Communications (URLLC),
•  Massive Machine Type Communications (MMTC).

the requirements of each one of them is as shown below