5G New Radio
5G New Radio
A Beam-based Air Interface
Edited by
Mihai Enescu
This edition rst published 2020
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Contents
List of Contributors xiii
Preface xv
Acknowledgments xvii
Abbreviations xix
1 Introduction and Background 1
Mihai Enescu and Karri Ranta-aho
1.1 Why 5G? 1
1.2 Requirements and Targets 2
1.2.1 System Requirements 3
1.2.2 5G Spectrum 7
1.3 Technology Components and Design Considerations 10
1.3.1 Waveform 12
1.3.2 Multiple Access 13
1.3.3 Scalable/Multi Numerology 13
1.3.3.1 Motivation for Multiple Numerologies 13
1.3.3.2 5G NR Numerologies 13
1.3.4 Multi-antenna 17
1.3.5 Interworking with LTE and Other Technologies 18
1.3.6 5G Beam Based Technologies Across Release 15 and Release 16 19
1.3.6.1 Integrated Access and Backhaul 19
1.3.6.2 NR Operation on Unlicensed Frequency Bands (NR-U) 20
1.3.6.3 Ultra-Reliable and Low Latency Communications 21
1.3.6.4 Vehicular-to-everything (V2X) 21
1.3.6.5 Positioning 22
1.3.6.6 System Enhancements 22
2 Network Architecture and NR Radio Protocols 25
Dawid Koziol and Helka-Liina Määttänen
2.1 Architecture Overview 25
2.2 Core Network Architecture 26
2.2.1 Overview 26
2.2.2 Service Request Procedure 29
