Patent ID: 11917023
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method implemented by a redundancy controller for providing protection for a session managed by a network node in a telecommunications network, the network node implemented by a hierarchy of service layers including a media plane layer and a control plane layer that manages media sessions, the method comprising:
generating, a layer-specific descriptor for at least the control plane layer, each layer-specific descriptor representing a state of a respective service layer for an active session;
storing the layer-specific descriptor for at least the control plane layer in an external database; and
restoring, responsive to a loss of the active session, the states of the control plane layer and media plane layer for the lost session based on the stored layer-specific descriptors.