5G is the fifth generation of cellular network technology. The industry association 3GPP defines any system using “5G NR” (5G New Radio) software as, “5G”, a definition that came into general use by late 2018. Others may reserve the term for systems that meet the requirements of the ITU IMT-2020. 3GPP will submit their 5G NR to the ITU. It follows 2G, 3G, 4G, and their respective associated technologies (such as GSM, UMTS, LTE, LTE Advanced Pro, and others). In addition to traditional mobile operator services, 5G NR also addresses specific requirements for private mobile networks ranging from industrial IoT to critical communications.