Table of Contents
1 Cover
5 Preface
9 Part I: Network Architectures, Standardization, Protocols, and Functions 2 Network Architectures, Standardizations Process Introduction 2.1 Network Elements and Basic Networks Architectures 2.2 Mobile Communication Network Domains 2.3 Mobile Communications Systems Evolutions 2.4 Mobile Communications Network System Engineering 2.5 Standardizations of Mobile Communications Networks 2.6 3GPP Releases and Its Features Chapter Summary 3 Protocols, Interfaces, and Architectures Introduction 3.1 Protocol Interface and Its Stack 3.2 Classifications of Protocol Layers 3.3 Grouping of UMTS, LTE, and 5G Air Interface Protocol Layers 3.4 Initialization of a Logical Interface 3.5 Protocol Layer Termination 3.6 Protocol Sublayers 3.7 Protocol Conversion 3.8 Working Model of a 3GPP Protocol Layer: Services and Functions 3.9 General Protocol Model Between RAN and CN (UMTS, LTE, 5G) 3.10 Multiple Transport Networks, Protocols, and Physical Layer Interfaces 3.11 How to Identify and Understand Protocol Architectures 3.12 Protocol Layer Procedures over CN Interfaces Chapter Summary 4 Encoding and Decoding of Messages Introduction 4.1 Description and Encoding/Decoding of Air Interface Messages 4.2 Encoding/Decoding of Signaling Messages: RAN and CN Chapter Summary 5 Network Elements Introduction 5.1 Network Elements and Their Identities 5.2 Permanent Identities 5.3 Temporary Identities Assigned by CN 5.4 Temporary Identities Assigned by RAN: RNTI 5.5 Usages of Network Identities 5.6 Native and Mapped Network Identities 5.7 LTE UE Application Protocol Identity Chapter Summary 6 Interworking and Interoperations of Mobile Communications Networks Introduction 6.1 Requirements and Types of Interworking 6.2 Interworking Through Enhanced Network Elements 6.3 Interworking Through Legacy Network Elements 6.4 Interworking Between LTE/EPS and 5G Systems 6.5 Interoperations of Networks: LTE/EPS Roaming 6.6 UE Mode of Operation 6.7 Function of E‐UTRAN in a VoLTE Call Chapter Summary 7 Load Balancing and Network Sharing Introduction 7.1 Core Network Elements Load Balancing 7.2 Network Sharing Chapter Summary 8 Packets Encapsulations and Their Routing Introduction 8.1 User Data Packets Encapsulations 8.2 IP Packet Routing in Mobile Communications Networks 8.3 IP Header Compression and Decompression Chapter Summary 9 Security Features in Mobile Communications Networks Introduction 9.1 A Brief on the Security Architecture: Features and Mechanisms 9.2 Security Features and Its Mechanisms 9.3 GSM Security Procedures 9.4 UMTS, LTE, and 5G: AS and NAS Layer Security Procedures