According to an embodiment of the present invention, the 5G architecture (23.501 3GGP technical specification) implements a function of selecting the correct network slice instance that suits the request of the user terminal, and in particular, communicates with the VNF orchestration platform to know the current state of the network. In other words, it is possible to provide a network slice selection function for identifying and selecting a network slice instance for interaction with a Mobility Management Entity (MME)/Access Mobility Function (AMF).
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