Packet Core Procedures

In this chapter, we will consolidate the concepts and fundamental knowledge from the previous chapters and map them to real 5G system procedures. We will see how the fundamentals of cloud-native infrastructure give shape to the communications between the various network functions in a producer-consumer relationship to bring about the reality of the 5G system and various procedures that enable a 5G device to get access to mobile broadband. All the call flows explained in detail here are expected to be implemented in code that has been built based on cloud-native development methods; these are mainly container-based and have a producer-consumer method of providing and consuming services.

In Chapter 2, we learned about the role of the network functions in the 5G packet core, and in Chapter 3, Building Blocks – Cloud Native Infrastructure, we learned about the services offered by each of those network functions. In this chapter, we will see how all the...