First of all, network slicing provides a complete end-to-end virtual network for a given source.
A Slice is a logical network based on Radio Access Network, Transport Network and Core Network, it is built as we decide to build it: per vertical, service, customer, technical characteristics, functional characteristics …
Regarding network functions required for 5G slicing support :
- Mandatory 5G Core network functions are AMF/SMF/UPF/AUSF/UDM/NRF.
- The dedicated Network Slice Selection Function (NSSF) is used for slice selection, with operator policies, when several slices are used.
Regarding specific features for use cases requirements using a specific slice type:
- For the use case URLLC, some features in the RAN and Core could be activated.
- For IoT related use cases some features on the energy saving or specific communication for short message are used.
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