Technique for maintaining a subscription of a subscriber nf

Abstract

A technique for maintaining a subscription of a subscriber Network Function, NF, for receiving events related to a User Equipment, UE, from a serving NF in a telecommunication system is disclosed, wherein the UE is served by a first instance of the serving NF. A method implementation of the technique is performed by the first instance of the serving NF and comprises receiving (S) a subscription request from the subscriber NF, the subscription request including a persistence indication indicating that the subscription is to be maintained, triggering (S) generating subscription restoration information enabling restoration of the subscription in case the first instance of the serving NF ceases serving the UE, and triggering (S) storing the subscription restoration information in a data storage function of the telecommunication system in association with the UE, wherein the subscription restoration information is to be used by a second instance of the serving NF for restoring the subscription if the first instance of the serving NF ceases serving the UE.