Tabla de Contenidos: “…Preface xxi -- Acknowledgements xxiii -- List of Abbreviations xxv -- 1 Introduction 1 -- 1.1 Architectural Review of UMTS and GSM 1 -- 1.1.1 High-Level Architecture 1 -- 1.1.2 Architecture of the Radio Access Network 2 -- 1.1.3 Architecture of the Core Network 4 -- 1.1.4 Communication Protocols 5 -- 1.2 History of Mobile Telecommunication Systems 6 -- 1.2.1 From 1G to 3G 6 -- 1.2.2 Third Generation Systems 7 -- 1.3 The Need for LTE 8 -- 1.3.1 The Growth of Mobile Data 8 -- 1.3.2 Capacity of a Mobile Telecommunication System 9 -- 1.3.3 Increasing the System Capacity 10 -- 1.3.4 Additional Motivations 11 -- 1.4 From UMTS to LTE 11 -- 1.4.1 High-Level Architecture of LTE 11 -- 1.4.2 Long-Term Evolution 12 -- 1.4.3 System Architecture Evolution 13 -- 1.4.4 LTE Voice Calls 14 -- 1.4.5 The Growth of LTE 15 -- 1.5 From LTE to LTE-Advanced 16 -- 1.5.1 The ITU Requirements for 4G 16 -- 1.5.2 Requirements of LTE-Advanced 16 -- 1.5.3 4G Communication Systems 16 -- 1.5.4 The Meaning of 4G 17 -- 1.6 The 3GPP Specifications for LTE 17 -- References 19 -- 2 System Architecture Evolution 21 -- 2.1 High-Level Architecture of LTE 21 -- 2.2 User Equipment 21 -- 2.2.1 Architecture of the UE 21 -- 2.2.2 UE Capabilities 22 -- 2.3 Evolved UMTS Terrestrial Radio Access Network 23 -- 2.3.1 Architecture of the E-UTRAN 23 -- 2.3.2 Transport Network 24 -- 2.3.3 Small Cells and the Home eNB 25 -- 2.4 Evolved Packet Core 25 -- 2.4.1 Architecture of the EPC 25 -- 2.4.2 Roaming Architecture 27 -- 2.4.3 Network Areas 28 -- 2.4.4 Numbering, Addressing and Identification 28 -- 2.5 Communication Protocols 30 -- 2.5.1 Protocol Model 30 -- 2.5.2 Air Interface Transport Protocols 31 -- 2.5.3 Fixed Network Transport Protocols 31 -- 2.5.4 User Plane Protocols 32 -- 2.5.5 Signalling Protocols 33 -- 2.6 Example Signalling Flows 34 -- 2.6.1 Access Stratum Signalling 34 -- 2.6.2 Non-Access Stratum Signalling 35 -- 2.7 Bearer Management 36 -- 2.7.1 The EPS Bearer 36 -- 2.7.2 Default and Dedicated Bearers 37.…”

“…G Protein-Coupled Receptor Kinases…”

“…6G-ABS '21…”

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