5G New Radio: Physical Layer Overview

doi:10.3969/j.issn.1673-5188.2017.S1.001

ZTE Communications ›› 2017, Vol. 15 ›› Issue (S1): 3-10.DOI: 10.3969/j.issn.1673-5188.2017.S1.001

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5G New Radio: Physical Layer Overview

YUAN Yifei, WANG Xinhui

ZTE Corporation, Shenzhen 518057, China

Received:2016-10-26 Online:2017-06-25 Published:2020-04-14
About author:YUAN Yifei (yuan.yifei@zte.com.cn) received his B.S. and M.S. degrees from Tsinghua University, China. He received his Ph.D. from Carnegie Mellon University, USA. From 2000 to 2008, he worked with Alcatel-Lucent on 3G and 4G key technologies. Since 2008, he has worked for ZTE Corporation researching 5G technologies and standards for LTE-Advanced physical layer. His research interests include MIMO, iterative codes, and resource scheduling. He was admitted to the Thousand Talent Plan Program of China in 2010. He has written three books on LTE-A relay, Narrow-band IoT, and LTE-Advanced key technologies and system performance, respectively. He has had more than 40 patents approved.|WANG Xinhui (wangxinhui@zte.com.cn) received his bachelor’s and master’s degrees from Northeastern University of China. He joined ZTE Corporation in 2000, working on software development and system design of wireless communication system. Since 2006, he has been focusing on advanced radio access technology research and standardization. His research interests include network densification, massive machine communications and high frequency communications. He has been elected as the vice chairman of 3GPP GERAN TSG for three consecutive terms since 2011. He is currently chairing the Radio Access Technology Group of IMT-2020(5G) Promotion Group as the vice chairman. He held over 40 granted patents globally.

Abstract

Abstract:

This paper provides an overview of the physical layer of 5G new radio (NR) system. A general framework of 5G NR is first described, which glues together various key components, all of them helping to fulfill the requirements of three major deployment scenarios: enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC) and massive machine type communications (mMTC). Then, several key components of the 5G NR physical layer are discussed in more detail that include multiple access, channel coding, multiple antennas, frame structures, and initial access. The two-phase approach of NR is also discussed and the key technologies expected to be specified in Phase 1 and Phase 2 are listed.

Key words: 5G, IMT-2020, new radio (NR)

YUAN Yifei, WANG Xinhui. 5G New Radio: Physical Layer Overview[J]. ZTE Communications, 2017, 15(S1): 3-10.

Figures/Tables 8

Figure 1. Framework of NR physical layer technologies.

Figure 2. Grant-free and RACH-free transmission.

Figure 3. Basic concept of quasi-cyclic LDPC.

Figure 4. CSI feedback.

Figure 5. NR frame structure.

Figure 6. Nested structure of PRB.

Figure 7. Self-contained scheduling frame.

Figure 8. Beam sweeping when Tx/Rx reciprocity is reliable.

References 8

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5G New Radio: Physical Layer Overview

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