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 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 2nd edition of this book significantly enhances the first edition by adding 5G security and Release-16 developments. Loosely speaking, 5G Release-15 can be characterized as being optimized for the cellular carrier eMBB service while 5G Release-16 is the beginning of the optimization of 5G for the vertical industries. It mainly focused on the support of the vehicular vertical and Industrial Internet of Things. As such, we have significantly altered the first edition to cover the key features standardized in Release-16 covering: URLLC, V2X, IIoT, private network and security.weiterlesen