Erik Dahlman - 5g Nr: The Next Generation Wireless Access Technology

1. Tables in Chapter 2
2. Tables in Chapter 3
3. Tables in Chapter 7
4. Tables in Chapter 8
5. Tables in Chapter 10
6. Tables in Chapter 13
7. Tables in Chapter 14
8. Tables in Chapter 16
9. Tables in Chapter 18
10. Tables in Chapter 19

1. Figures in Chapter 1
2. Figures in Chapter 2
3. Figures in Chapter 3
4. Figures in Chapter 4
5. Figures in Chapter 5
6. Figures in Chapter 6
7. Figures in Chapter 7
8. Figures in Chapter 8
9. Figures in Chapter 9
10. Figures in Chapter 10
11. Figures in Chapter 11
12. Figures in Chapter 12
13. Figures in Chapter 13
14. Figures in Chapter 14
15. Figures in Chapter 15
16. Figures in Chapter 16
17. Figures in Chapter 17
18. Figures in Chapter 18
19. Figures in Chapter 19
20. Figures in Chapter 20

Erik Dahlman

Stefan Parkvall

Johan Skld

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Long-Term Evolution (LTE) has become the most successful wireless mobile broadband technology across the world, serving billions of users. Mobile broadband is, and will continue to be, an important part of future cellular communication, but future wireless networks are to a large extent also about a significantly wider range of use cases and a correspondingly wider range of requirements. Although LTE is a very capable technology, still evolving and expected to be used for many years to come, a new 5G radio access known as New Radio (NR) has been standardized to meet future requirements.

This book describes NR, developed in 3GPP (Third Generation Partnership Project) as of late Spring 2018.

together with a discussion on the process for finding new frequency bands.

An overview of LTE and its evolution is found in . Although the focus of the book is NR, a brief overview of LTE as a background to the coming chapters is relevant. One reason is that both LTE and NR are developed by 3GPP and hence have a common background and share several technology components. Many of the design choices in NR are also based on experience from LTE. Furthermore, LTE continues to evolve in parallel with NR and is an important component in 5G radio access.

provides an overview of NR. It can be read on its own to get a high-level understanding of NR, or as an introduction to the subsequent chapters.

.

Multiantenna processing and beam-forming are integral parts of NR. The channel sounding tools to support these functions are outlined in .

Retransmission functionality and scheduling are the topics of .

Coexistence and interworking with LTE is an essential part of NR, especially in the nonstandalone version which relies on LTE for mobility and initial access, and is covered in .

Radio-frequency (RF) requirements, taking into account spectrum flexibility across large frequency ranges and multistandard radio equipment, are the topic of discusses the RF implementation aspects for higher frequency bands in the mm-wave range.

Finally, concludes the book with an outlook to future NR releases.

We thank all our colleagues at Ericsson for assisting in this project by helping with contributions to the book, giving suggestions and comments on the contents, and taking part in the huge team effort of developing NR and the next generation of radio access for 5G.

The standardization process involves people from all parts of the world, and we acknowledge the efforts of our colleagues in the wireless industry in general and in 3GPP RAN in particular. Without their work and contributions to the standardization, this book would not have been possible.

Finally, we are immensely grateful to our families for bearing with us and supporting us during the long process of writing this book.

3GPP Third Generation Partnership Project

5GCN 5G Core Network

AAS Active Antenna System

ACIR Adjacent Channel Interference Ratio

ACK Acknowledgment (in ARQ protocols)

ACLR Adjacent Channel Leakage Ratio

ACS Adjacent Channel Selectivity

ADC Analog-to-Digital Converter

AF Application Function

AGC Automatic Gain Control

AM Acknowledged Mode (RLC configuration)

AM Amplitude Modulation