This book presents a detailed pedagogical description of the 5G commercial wireless communication system design, from an end to end perspective, from those that were intimate with its development. The book only assumes that the reader is passingly familiar with LTE and builds upon that knowledge. It does so by comparing and contrasting NR with LTE. As such it gives a concise and highly accessible description of the key technologies in the 5G physical layer, radio access network layer protocols and procedures, how the 5G core and EPC is integrated into the radio access network, how virtualization and edge computer will fundamentally change the way we interact with the network as well as 5G spectrum issues.The book is structured into six chapters. The first chapter looks at the use cases, requirements, and standardization organization and activities for 5G. These are 5G requirements and not NR specifically, as any technology that meets the requirements may be submitted to the ITU as 5G technology including a set of Radio Access Technologies (RATs) consisting of NR and LTE; with each RAT meeting different aspects of the requirements. A second chapter describes, in detail, the air interface of NR and LTE side-by-side. The basic aspects of LTE that NR builds upon are first described, followed by sections on the NR specific technologies such as carrier/channel, spectrum/duplexing (including SUL), LTE/NR co-existence and new physical layer technologies (including waveform, Polar/LDPC codes, MIMO, and URLLC/mMTC). In all cases the enhancements made relative to LTE are made apparent. The third chapter contains description of NR procedures (IAM/Beam Management/Power control/HARQ), protocols (CP/UP/mobility, including grant-free), and RAN architecture. The fourth chapter has a detailed discussion related to end-to-end system architecture, and the 5G Core (5GC), network slicing, service continuity, relation to EPC, network virtualization, and edge computing. The fifth major chapter describes the ITU submission and how NR and LTE meet the 5G requirements in significant detail, from the rapporteur responsible for leading the preparation and evaluation as well as some field trial results. Finally, the book concludes with a look at the 5G market and the future.weiterlesen