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Über dieses Buch

This book presents a detailed pedagogical description of the 5G commercial wireless communication system design, from an end to end perspective. It compares and contrasts NR with LTE, and gives a concise and highly accessible description of the key technologies in the 5G physical layer, radio access network layer protocols and procedures. This book also illustrates how the 5G core and EPC is integrated into the radio access network, how virtualization and edge computer fundamentally change the way users interact with the network, as well as 5G spectrum issues.
This book is structured into six chapters. The first chapter reviews the use cases, requirements, and standardization organization and activities for 5G. These are 5G requirements and not NR specifically, as technology that meets the requirements, may be submitted to the ITU as 5G technology. This includes a set of Radio Access Technologies (RATs), consisting of NR and LTE; with each RAT meeting different aspects of the requirements. The second chapter describes the air interface of NR and LTE side by side. The basic aspects of LTE that NR builds upon are first described, followed by sections on the NR specific technologies, such as carrier/channel, spectrum/duplexing (including SUL), LTE/NR co-existence and new physical layer technologies (including waveform, Polar/LDPC codes, MIMO, and URLLC/mMTC). In all cases the enhancements made relative to LTE are made apparent.
The third chapter contains descriptions of NR procedures (IAM/Beam Management/Power control/HARQ), protocols (CP/UP/mobility, including grant-free), and RAN architecture. The fourth chapter includes a detailed discussion related to end-to-end system architecture, and the 5G Core (5GC), network slicing, service continuity, relation to EPC, network virtualization, and edge computing. The fifth and major chapter describes the ITU submission and how NR and LTE meet the 5G requirements in significant detail, from the rapporteur responsible for leading the preparation and evaluation, as well as some field trial results.
Engineers, computer scientists and professionals with a passing knowledge of 4G LTE and a comprehensive understanding of the end to end 5G commercial wireless system will find this book to be a valuable asset. Advanced-level students and researchers studying and working in communication engineering, who want to gain an understanding of the 5G system (as well as methodologies to evaluate features and technologies intended to supplement 5G) will also find this book to be a valuable resource.

Inhaltsverzeichnis

Frontmatter

Chapter 1. From 4G to 5G: Use Cases and Requirements

Abstract
This chapter investigates the motivations and driving forces of 5G development as well as introduces the 5G use cases and technical requirements. 5G is the first generation that devotes itself to connecting both humans and machines. Accordingly, the service requirements and the technical performance requirements are extended from mobile broadband (MBB) to the new use cases. The diverse requirements pose significant challenges to system design.
Wan Lei, Anthony C. K. Soong, Liu Jianghua, Wu Yong, Brian Classon, Weimin Xiao, David Mazzarese, Zhao Yang, Tony Saboorian

Chapter 2. 5G Fundamental Air Interface Design

Abstract
This chapter describes, in detail, the air interface of NR and LTE side by side. The basic aspects of LTE that NR builds upon are first described, followed by sections on the NR-specific designs for the carrier, frame structure, physical channels, and reference signals. Then the global candidate spectrum for 5G NR is introduced which demonstrates the new characteristic with wider frequency range and bandwidth impacting on NR design. With respect to C-band as NR deployment typical spectrum, the coverage issue is identified and the mechanism of UL/DL decoupling scheme (i.e., LTE/NR spectrum sharing) to solve the coverage issue is mainly introduced. Afterwards, NR physical layer technologies including waveform, Polar/LDPC codes, MIMO, and mMTC are described, and in all cases the enhancements of NR made relative to LTE are made apparent.
Wan Lei, Anthony C. K. Soong, Liu Jianghua, Wu Yong, Brian Classon, Weimin Xiao, David Mazzarese, Zhao Yang, Tony Saboorian

Chapter 3. 5G Procedure, RAN Architecture, and Protocol

Abstract
In this chapter, the newly introduced procedures (IAM/Beam management/Power control/HARQ) in 5G NR are first described by taking into account the characteristics of the NR design. The concept “beam” is used in NR and the beam-based operation is applied in the procedures such as initial access and beam management for both downlink and uplink. HARQ is enabled to be much more flexible to achieve the low latency requirement. Then RAN architecture is introduced considering different 5G deployment options including NR standalone and LTE-NR dual connectivity, and RAN functionality split. Finally, the protocols related to higher layer procedures including UE state transition, paging, mobility, etc. for standalone NR are described.
Wan Lei, Anthony C. K. Soong, Liu Jianghua, Wu Yong, Brian Classon, Weimin Xiao, David Mazzarese, Zhao Yang, Tony Saboorian

Chapter 4. 5G System Architecture

Abstract
This chapter provides a concise description of the 3GPP standards for the 5G System (5GS) and highlights the major enhancements over 4G. Network slicing, virtualization, and edge computing with enhanced connectivity, session, and mobility management are some key enhancements. They cater to the requirements of a diverse set of services requiring low latency, high reliability, or a massive number of connections for short, intermittent periods over the same network.
John Kaippallimalil, Amanda Xiang

Chapter 5. 5G Capability Outlook: ITU-R Submission and Performance Evaluation

Abstract
In this chapter, the capability of 5G is evaluated against the eMBB, URLLC, and mMTC performance requirements using the evaluation method as defined in Report ITU-R M.2412 and the detailed evaluation method introduced in Sect. 5.3 as well as field trials. The performance evaluation is conducted to the key 5G technical components, including 5G wideband frame structure and physical channel structure, the physical layer key features including NR massive MIMO, multiple access and waveform, and the LTE/NR coexistence (UL/DL decoupling).
Wan Lei, Anthony C. K. Soong, Liu Jianghua, Wu Yong, Brian Classon, Weimin Xiao, David Mazzarese, Zhao Yang, Tony Saboorian

Chapter 6. 5G Market and Industry

Abstract
This chapter discusses the current global 5G market. It shows that although eMBB remains a significant segment of the commercial wireless market, the capabilities of 5G allow it to move beyond the eMBB and support vertical industries. This convergence of human-to-human communication with human-to-machine and machine-to-machine communications will be a key enabler of the fourth industrial revolution. How the industry plan to move forward, with a globally unified 5G standards and ecosystem from the different verticals, will be presented. Early 5G field trials and deployment plans will then be elucidated. The chapter and the book will conclude with a look forward on possible 5G developments.
Amanda Xiang
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