Method of and device for service discovery and selection

A service discovery and selection function device, arranged for operating in a telecommunications system, said service discovery and selection function device comprising:

• a registering processor, arranged for registering a service profile of a service provided by at least one service producer of said telecommunications system, said service profile among others comprising consistency group information and proximity information, wherein said consistency group information identifies instances of said service sharing a same state and stored in a shared state repository and said proximity information identifying deployment of said service instances in said telecommunications system;
• a selecting processor, arranged for selecting, from said service profile, a single service instance of said service for a service consumer of said telecommunications system requesting said service, based on service selection criteria accessible to said service discovery and selection function;
• a discovery processor, arranged for identifying, by said service discovery and selection function, said selected service instance to said service consumer, and
• subscribing to receive a notification from a unified data repository (UDR) when there are changes to said selected service instance profile,
• wherein said proximity information identifies proximity levels of a respective service instance by allowing to select said service instance based on geographical distance of the at least one service producer or a service provider and the service consumer, for optimizing network resources and signalling latency.