The 5G standardization process is complex and highly innovative. 5G standards are developed in the 3rd Generation Partnership Project (3GPP), ITU Radiocommunication Sector (ITU-R), ITU Telecommunication Standardization Sector (ITU- T), the Internet Engineering Task Force (IETF) and IEEE. Here we focus on activities within 3GPP. 1.3GPP 5G will expand the LTE platform for new services while improving its efficiency to meet the mobile broadband demand. 2.3GPP 5G is not only a new radio (NR) interface but a full system, integrating LTE and NR radio access technologies with a 5G Core Network 3. Initially, some of the use cases will be fulfilled by LTE, but the aim is to eventually fulfill all the requirements with NR 4. From Release 15 onwards, the 3GPP specifications (LTE, NR and Core Network) will be marked “5G” 5.5G expands offerings by specializing radio and network capabilities (vertical sectors): – Enhanced Mobile Broadband – Massive Internet of Things – Ultra-Re...