Section: 6.1.2.2 Management
Content: The 5G system shall allow the operator to create, modify, and delete a network slice. The 5G system shall allow the operator to define and update the set of services and capabilities supported in a network slice. The 5G system shall allow the operator to configure the information which associates a UE to a network slice. The 5G system shall allow the operator to configure the information which associates a service to a network slice. The 5G system shall allow the operator to assign a UE to a network slice, to move a UE from one network slice to another, and to remove a UE from a network slice based on subscription, UE capabilities, the access technology being used by the UE, operator's policies and services provided by the network slice. The 5G system shall support a mechanism for the VPLMN, as authorized by the HPLMN, to assign a UE to a network slice with the needed services or to a default network slice. The 5G system shall enable a UE to be simultaneously assigned to and access services from more than one network slice of one operator. Traffic and services in one network slice shall have no impact on traffic and services in other network slices in the same network. Creation, modification, and deletion of a network slice shall have no or minimal impact on traffic and services in other network slices in the same network. The 5G system shall support scaling of a network slice, i.e. adaptation of its capacity. The 5G system shall enable the network operator to define a minimum available capacity for a network slice. Scaling of other network slices on the same network shall have no impact on the availability of the minimum capacity for that network slice. The 5G system shall enable the network operator to define a maximum capacity (e.g., number of UEs, number of data sessions) for a network slice. The 5G system shall enable the network operator to define a priority order between different network slices in case multiple network slices compete for resources on the same network. The 5G system shall support means by which the operator can differentiate policy control, functionality and performance provided in different network slices.