5G New Radio: Unveiling the Essentials of the Next Generation Wireless Access Technology

TL;DR

This paper provides a comprehensive overview of 5G New Radio, detailing its key features, physical layer design, and standardization efforts to support diverse use cases like enhanced broadband and low-latency communications.

Contribution

It offers an in-depth explanation of 5G NR physical layer design and the rationale behind standardization, highlighting the technological innovations enabling 5G capabilities.

Findings

Overview of 5G NR physical layer components

Design rationales for 5G standardization

Support for diverse 5G use cases

Abstract

The 5th generation (5G) wireless access technology, known as new radio (NR), will address a variety of usage scenarios from enhanced mobile broadband to ultra-reliable low-latency communications to massive machine type communications. Key technology features include ultra-lean transmission, support for low latency, advanced antenna technologies, and spectrum flexibility including operation in high frequency bands and inter-working between high and low frequency bands. This article provides an overview of the essentials of the state of the art in 5G wireless technology represented by the 3GPP NR technical specifications, with a focus on the physical layer. We describe the fundamental concepts of 5G NR, explain in detail the design of physical channels and reference signals, and share the various design rationales influencing standardization.