12 Part IV: 5G System and Network 16 5G Network Introduction 16.1 5G System (5GS) Use Cases 16.2 Support of Legacy Services by 5G System 16.3 5G System Network Architecture 16.4 5G System NG–RAN/gNB Logical Architecture 16.5 5GC System Architecture Elements 16.6 5G System Deployment Solutions 16.7 5G System and LTE/EPS Interworking 16.8 5G System Native and Mapped Network Identities 16.9 5G System Network Slicing 16.10 Management and Orchestration (MANO) of 5G Network 16.11 5G System Security Chapter Summary 17 Introduction to GSM, UMTS, and LTE Systems Air Interface Introduction 17.1 Air Interfaces Protocol Architectures 17.2 Protocol Sublayers 17.3 Control Plane and User Plane Protocols 17.4 Protocols Domains Classifications 17.5 Access Stratum and Non‐access Stratum 17.6 Message Formats 17.7 Security Over the Air Interface 17.8 Piggybacking for Reduction of Signaling Overhead 18 5G NR Air Interface Introduction 18.1 NR Control Plane Protocol Layers 18.2 Session Management (5G SM) Layer 18.3 Quality of Service (5G QoS) 18.4 Mobility Management (5G MM) Layer 18.5 RRC Layer Chapter Summary 19 5G NR Air Interface Introduction 19.1 NR User Plane Protocol Layers 19.2 SDAP Layer 19.3 PDCP Layer 19.4 RLC Layer 19.5 MAC Layer 19.6 Physical Layer Chapter Summary 20 5G Core Network Architecture Introduction 20.1 Control Plane and User Plane Separation – CUPS 20.2 Service‐Based Architecture (SBA) 20.3 Network Function Virtualization (NFV) Chapter Summary 21 5G System Introduction 21.1 Design of 5GC Service Interface and Its Operations 21.2 Design of 5GC NF Service Interface Using UML and C++ Class Diagram 21.3 Usages of C++ Standard Template Library (STL) 21.4 Software Architecture for 5G System 21.5 Data Types Used in 5GC SBI Communications Chapter Summary 22 3GPP Release 16 and Beyond Introduction 22.1 5GS Enhancements as Part of Release 16 22.2 5GS New Features as Part of Release 16 22.3 3GPP Release 17 Chapter Summary
13 Test Yourself! Introductions A.1 5G Mobile Communications and Systems Concepts A.2 Software Program Development Exercises
14 References Further Readings
15 Index
List of Tables
1 Chapter 2Table 2.1 Network elements comparisons.Table 2.2 Evolutions of 3GPP systems and their air interfaces.Table 2.3 Summary of 3GPP Releases and their features.
2 Chapter 3Table 3.1 GSM and GPRS system network elements and logical interfaces.Table 3.2 UMTS system network elements and logical interfaces.