Page 216 - 5G Basics - Core Network Aspects

1 Core network aspects

infrastructure for the applications. By adopting SDN technologies, highly scalable and flexible control as well
as programmable and automatic interaction between network and applications can be supported in S-NICE.

In S-NICE, the control plane functions are centralized in the S-NICE controller, which maintains a global view
of the data plane including network status and traffic information. As a result, the data plane appears to the
S-NICE controller as an abstracted logical network/resource. Meanwhile, the functional entities in data plane
only need to accept and execute the instructions from the centralized S-NICE controller.

7 Functional architecture for S-NICE

7.1 Overall functional architecture of S-NICE
7.1.1 Relationship between architectures of NICE and S-NICE

Figure 7-1 shows the relationship between NICE architecture and S-NICE architecture.

Figure 7-1 – Relationship between architectures of NICE and S-NICE

In S-NICE architecture, there are three main functions: S-NICE orchestration functions, S-NICE controller
functions and S-NICE infrastructure functions.

In service stratum, S-NICE orchestration functions include the open environment FE, the service control FE of
NICE architecture, and have some enhancements by taking advantage of SDN concept and technologies to
provide ''dynamic'' resource control, registration, authentication and authorization functions at the service
level, upon the request of applications.
In transport stratum, S-NICE controller functions include the policy control FE, the traffic scheduling FE of
NICE architecture, and have some enhancements by taking advantage of SDN concept and technologies to

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