Patent ID: 11937170
Assignee: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A unified data management (UDM) node implementing a UDM network function in a communications network, comprising:
a processing resource; and
a computer-readable storage medium comprising instructions executable by the processing resource to:
receive, from a session management function (SMF) node, a session registration request for accessing a first network slice of the communications network to which a user equipment (UE) seeks access;
determine that a network slice access-control function is applied on the UE;
in response to determining that the network slice access-control function is applied on the UE, determine whether the UE has an active session registration for a second network slice in the communications network; and
in response to determining that the UE has the active session registration for the second network slice, selectively reject the session registration request for
accessing the first network slice based on a combination of a first network slice access-control policy and a second network slice access-control policy, wherein the first network slice access-control policy specifies restricted network slices corresponding to one or more network slices, wherein the second network slice access-control policy specifies different primary network slices for different time periods, and wherein selectively rejecting the session registration request comprises:
in response to determining that the first network slice and the second network slice are mutually exclusive based on the first network slice access-control policy, determining whether the first network slice is a primary network slice based on the second network slice access-control policy and an instant time; and
in response to determining that the first network slice is the primary network slice, deregistering the active session registration for the second network slice and allowing the session registration request after deregistering the active session registration.