Page 437 - 5G Basics - Core Network Aspects

Core network aspects 1

I.2 Convergence in application layer

In this scenario, the different service control network is used to provide the service when the user accesses
FMC using fixed access network or mobile access network. Convergence does not occur in the service control
layer (call control or session control functions), but occurs in the service support functions in the application
layer as illustrated in Figure I.2.

Figure I.2 – Scenario: Convergences in application/service support functions

NOTE – The example in Figure I.2 is a scenario where convergence occurs in the application/service support functions.
Convergence may also occur only in the applications in the application layer as shown in Figure I.3.

Figure I.3 – Scenario: Convergence in applications

I.3 Convergence in the management layer
In this scenario, the control layer and the application layer of the fixed and mobile networks are unchanged,
but some changes occur in the charging and billing functions to provide bundled billing of at least some
services. This may also be referred to as FMC and is illustrated in Figure I.4.

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