Foreword About the Editors Preface Acknowledgements Introduction Terminology 1 Drivers and Motivation for 5G Betsy Covell, Rainer Liebhart 1.1 Drivers for 5G 1.2 ITU-R and IMT 2020 Vision 1.3 NGMN 1.4 5GPPP 1.5 Requirements for support of known and new Services 1.5.1 Massive IoT 1.

5.2 Time Critical Communication 1.5.3 Enhanced Mobile Broadband 1.5.4 Enhanced Vehicular Communications 1.5.5 Network Operations 1.

6 5G Use Cases 1.6.1 5G to the Home 1.6.2 In-Vehicle Infotainment 1.6.3 Hot Spots 1.6.

4 Truck Platooning 1.6.5 Connected Health Care 1.6.6 Industry 4.0 1.6.7 Megacities 1.

7 Business Models 1.7.1 Asset Provider Role 1.7.2 Connectivity Provider Role 1.7.3 Partner Service Provider Role 1.8 Deployment Strategies 1.

9 3GPP Role and Timelines 1.10 References 2 Wireless Spectrum for 5G Juho Pirskanen, Karri Ranta-aho, Rauno Ruismäki and Mikko Uusitalo 2.1 Current Spectrum for Mobile Communication 2.2 Spectrum Considerations for 5G 2.3 Identified New Spectrum 2.4 Spectrum Regulations 2.4.1 Licensed Spectrum 2.

4.2 License-exempt Spectrum 2.4.3 New Regulatory Approaches 2.5 Characteristics of Spectrum available for 5G 2.5.1 Pathloss 2.5.

2 Multipath Propagation 2.6 NR Bands defined by 3GPP 2.7 References 3 Radio Access Technology Sami Hakola, Toni Levanen, Juho Pirskanen, Karri Ranta-aho, Samuli Turtinen, Fred Vook 3.1 Evolution towards 5G 3.1.1 Introduction 3.1.2 Pre-Standard Solutions 3.

2 Basic Building Blocks 3.2.1 Waveforms for Downlink and Uplink 3.2.2 Multiple Access 3.2.3 5G Numerology and Frame Structures 3.2.

4 Bandwidth and Carrier Aggregation 3.2.5 Massive MIMO 3.2.6 Channel Coding 3.2.6.1 Channel Coding for User Plane Data 3.

2.6.2 Channel Coding for Physical Control Channels 3.3 Downlink Physical Layer 3.3.1 Synchronization and Cell Detection 3.3.1.

1 Primary Synchronization Signal (PSS) 3.3.1.2 Secondary Synchronization Signal (SSS) 3.3.1.3 Physical Broadcast Channel (PBCH) 3.3.

1.4 SS Block Burst Set 3.3.2 System Information Broadcast (SIB) 3.3.2.1 Remaining Minimum System Information (RMSI) 3.3.

2.2 Other System Information 3.3.3 Downlink Data Transmission 3.4 Uplink Physical Layer 3.4.1 Random Access 3.4.

1.1 Long Sequence 3.4.1.2 Short Sequence 3.4.2 Uplink Data Transmission 3.4.

3 Contention Based Access 3.5 Radio Protocols 3.5.1 Overall Radio Protocol Architecture 3.5.2 Medium Access Control (MAC) 3.5.2.

1 Logical Channels and Transport Channels 3.5.2.2 MAC PDU Structures for Efficient Processing 3.5.2.3 Procedures to support UL Scheduling 3.5.

2.4 Discontinuous Reception and Transmission 3.5.2.5 Random Access Procedure 3.5.2.6 Beam Failure Management 3.

5.3 Radio Link Control (RLC) 3.5.3.1 Segmentation 3.5.3.2 Error Correction through ARQ 3.

5.3.3 Reduced RLC Functions for Efficient Processing 3.5.4 Packet Data Convergence Protocol (PDCP) 3.5.4.1 Reordering 3.

5.4.2 Security 3.5.4.3 Header Compression 3.5.4.

4 Duplication 3.5.5 Service Data Adaptation Protocol (SDAP) 3.5.5.1 Mapping of QoS Flows to Data Radio Bearer 3.5.5.

2 QoS Flow remapping between Data Radio Bearer 3.5.6 Radio Resource Control (RRC) 3.6 Mobile Broadband 3.6.1 Introduction 3.6.2 Indoor Solutions 3.

6.3 Outdoor-Urban Areas 3.7 References 4 Next Generation Network Architecture Devaki Chandramouli, Subramanya Chandrashekar, Andreas Maeder, Tuomas Niemela, Thomas Theimer, Laurent Thiebaut 4.1 Drivers and Motivation for a New Architecture 4.1.1 New Services Emerging 4.1.2 Targets for the New Architecture 4.

1.3 Shortcomings of the Current Architecture 4.2 Architecture Requirements and Principles 4.2.1 Overview 4.2.2 Architecture Domains 4.2.

3 Flexible Connectivity Models 4.2.4 Service Based Architecture 4.2.5 Unified Policy Framework 4.2.6 Programmable Network 4.2.

7 Cloud-native Network Functions 4.2.8 Architectures for different Spectrum Options 4.2.9 RAN Architecture Principles 4.2.10 Interworking Principles 4.3 5G System Architecture 4.

3.1 5G System Architecture Reference Model 4.3.2 Functional Description 4.3.2.1 Access and Mobility Management Function (AMF) 4.3.

2.2 Session Management Function (SMF) 4.3.2.3 Policy Control Function (PCF) 4.3.2.4 Unified Data Management (UDM) 4.

3.2.5 Authentication Server Function (AUSF) 4.3.2.6 Unified Data Repository (UDR) 4.3.2.

7 Unstructured Data Storage Function (UDSF) 4.3.2.8 Network Repository Function (NRF) and Network Slice Selection Function (NSSF) 4.3.2.9 Network Exposure Function (NEF) 4.3.

2.10 Security Edge Protection Proxy (SEPP) 4.3.2.11 User Plane Function (UPF) 4.3.2.12 Application Function (AF) 4.

4 NG RAN Architecture 4.4.1 Principles and Objectives 4.4.2 Overall NG-RAN Architecture 4.4.3 Logical NG-RAN Split 4.4.

4 Lower-Layer Split 4.4.5 Service-Aware Function Placement 4.4.6 Connectivity to Multiple RAT 4.5 Non-Standalone and Standalone Deployment Options 4.5.1 Architecture Options 4.

5.2 Non-Standalone Architecture with EPS 4.6 Identifiers 4.6.1 Overview 4.6.2 Subscription Permanent Identifier 4.6.

3 Subscription Concealed Identifier 4.6.4 Temporary Identifier 4.7 Network Slicing 4.7.1 Introduction and Definition 4.7.2 Isolation Properties 4.

7.3 Slicing Architecture 4.7.4 Slice Selection 4.7.5 Interworking with EPS (e)DECOR 4.8 Multi-Access Edge Computing 4.9 Data Storage Architecture 4.

9.1 Introduction 4.9.2 Compute-Storage Split 4.9.3 What is "stateless"? How "stateless" is "stateless"? 4.9.4 AMF Resiliency and State-efficient AMF 4.

10 Network Capability Exposure 4.10.1 Introduction 4.10.2 Bulk Subscription 4.10.3 NEF Capabilities 4.11 Interworking and Migration with EPS 4.

11.1 Background 4.11.2 Migration from EPS towards 5GS 4.11.3 System level Interworking with EPS 4.11.4 Interworking between EPC and 5GC using N26 4.

11.5 Interworking between EPC and 5GC without N26 4.12 Support for Non-3GPP Access 4.12.1 Introduction 4.12.2 Interworking with EPC in case of Non-3GPP Access 4.12.

3 Multi-access PDU Sessions 4.13 Fixed Mobile Convergence 4.14 Network Function Service Framework 4.14.1 Principles of a Service Framework 4.14.2 What is an NF Service? 4.14.

3 Consumer/Producer Interactions 4.14.4 Network Function Service Authorization 4.14.5 Network Function Registration and De-registration 4.14.6 Network Function Discovery 4.14.

7 Network Function Services 4.14.7.1 AMF Services 4.14.7.2 SMF Services 4.14.

7.3 UDM Services 4.14.7.4 NRF Services 4.15 Support for IMS Services 4.15.1 Overview 4.

15.2 Support for System/EPS Fallback for Voice 4.15.3 Support for RAT/E-UTRA Fallback for Voice 4.16 Emergency Services 4.16.1 Overview 4.16.

2 Support for Emergency Services Fallback 4.17 Location Services 4.18 Support for Short Message Service 4.18.1 Overview 4.18.2 SMS over NAS 4.19 Public Warning System 4.

20 5G System Protocol Stacks 4.20.1 Control Plane Protocol Stacks 4.20.2 User Plane Protocol Stacks 4.21 Charging 4.22 Summary and Outlook of 5G System Features 4.23 Terminology and Definitions 4.

24 References 5 Access Control and Mobility Management Devaki Chandramouli, Subramanya Chandrashekar, Jarmo Makinen, Mikko Säily, Sung Hwan Won 5.1 General Principles 5.1.1 Mobility Management Objectives 5.1.2 Mobility Requirements for the 5G System 5.1.3 Mobility Support in the 5G System 5.

2 Mobility States and Functionalities 5.2.1 NAS State Machine and State Transitions 5.2.2 RRC State Machine and State Transitions 5.2.3 Inter-RAT Operation of RRC States 5.2.

4 Benefits of the new RRC State Model 5.3 Initial Access and Registration 5.4 Connected Mode Mobility 5.4.1 NSA Mobility Scenarios 5.4.2 Standalone (SA) Mobility Scenarios 5.4.

3 Conditional Handover 5.5 Idle Mode Mobility and UE Reachability 5.5.1 Overview 5.5.2 Mobility Registration and Periodic Registration 5.5.3 Network Initiated Paging 5.

6 RRC Inactive State Mobility and UE Reachability 5.6.1 Overview 5.6.2 Cell Selection and Reselection 5.6.3 Paging and Notification from RAN 5.6.

4 RAN Notification Area 5.6.5 RRC Inactivation 5.6.6 RRC Activation 5.7 Beam Level Mobility 5.7.1 Overview 5.

7.2 Beam Management 5.7.3 Beam Level and Cell Level Mobility 5.8 Support for High Speed Mobility 5.8.1 Overview 5.8.

2 Enablers for High Speed Mobility 5.9 Support for Ultra Low Latency and Reliable Mobility 5.9.1 URLLC Requirements 5.9.2 The Challenges of URLLC Mobility 5.9.3 Multi-Connectivity as a Solution for.