Patent ID: 11924630
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for transferring a security context for a user equipment in an idle mode, the method implemented by one or more core network nodes in a core network of a wireless communication network, wherein the one or more core network nodes provide a source mobility management function, the method comprising:
receiving, from a target mobility management function in a core network of the wireless communication network, a request for a security context for the user equipment;
determining that an operator policy is met;
generating a new non-access stratum key responsive to determining the operator specific policy is met; and
sending, responsive to the request, the new non-access stratum key and a key change indication to the target mobility management function, the key change indication indicating that the non-access stratum key has been changed.