Book Image

Mastering 5G Network Design, Implementation, and Operations

By : Shyam Varan Nath, Ananya Simlai, Oğuzhan Kara
5 (1)
Book Image

Mastering 5G Network Design, Implementation, and Operations

5 (1)
By: Shyam Varan Nath, Ananya Simlai, Oğuzhan Kara

Overview of this book

We are living in an era where ultra-fast internet speed is not a want, but a necessity. As applications continue to evolve, they demand a reliable network with low latency and high speed. With the widespread commercial adoption of driverless cars, robotic factory floors, and AR/VR-based immersive sporting events, speed and reliability are becoming more crucial than ever before. Fortunately, the power of 5G technology enables all this and much more. This book helps you understand the fundamental building blocks that enable 5G technology. You’ll explore the unique aspects that make 5G capable of meeting high-quality demands, including technologies that back 5G, enhancements in the air interface, and packet core, which come together to create a network with unparalleled performance. As you advance, you’ll discover how to design and implement both 5G macro and private networks, while also learning about the various design and deployment options available and which option is best suited for specific use cases. After that, you’ll check out the operational and maintenance aspects of such networks and how 5G works together with fixed wireline and satellite technologies. By the end of this book, you’ll understand the theoretical and practical aspects of 5G, enabling you to use it as a handbook to establish a 5G network.
Table of Contents (23 chapters)
1
Part 1:Introduction to 5G
Free Chapter
2
Chapter 1: Introduction to 5G
10
Part 2:5G Network Design, Deployment Models, and Advanced Use Cases

Waveform, numerology, and frame structure

In this section, we will analyze NR waveform, numerology, and frame structure. We will first talk about scalable numerology, slot duration, and how they help to multiplex different numerologies. Then, we will talk about different NR scheduling schemes and related use cases.

Waveform

NR employs OFDM for downlink and uplink transmissions. These are the very same waveforms that were used in LTE.

Figure 4.12 – A visualization of an OFDM waveform

Figure 4.12 – A visualization of an OFDM waveform

In the preceding figure, the visualization of an OFDM waveform is presented. It has a symmetric design, and the same waveform is used in downlink and uplink transmissions. Besides supporting MIMO in downlink and uplink transmissions, it also supports flexible numerology.

Within a given numerology, all other subcarriers are zero at sampling points. OFDM is a proven technology, and it has several benefits:

  • Frequency diversity
  • It’s robust against...