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

IMS 5G PDU session establishment

Voice and video calls are use cases that need to be supported by every service provider network. The IP Multimedia Subsystem (IMS) enables these services in a telecom network. In this section, we will see how voice, video, and rich communication services are provided with the help of the IMS in 5G, which is very similar to the support of voice in 4G (VoLTE). Figure 7.12 shows the establishment of an IMS PDU session in 5G:

Figure 7.12 – IMS 5G PDU attach in 5G – part 1

Figure 7.12 – IMS 5G PDU attach in 5G – part 1

Let’s look at these steps in detail:

Step 1: The UE initiates the N1 message with the PDU session establishment request by including a container identifier, P-CSCF IPv4/v6 Request contained within the ePCO (extended Protocol Configuration Options) IE, and DNN set to IMS.

Step 2: The AMF sends the Nsmf_PDUSession_CreateSM context request to the SMF by including N1 and N2 messages as multipart, along with the ePCO IE if it is received...