A technique for anticipating impacts on service levels of one or more services provided to a User Equipment, UE, while the UE moves along a planned route is disclosed, wherein each of the one or more services is provided to the UE using a network slice in a network slicing based mobile communication system. A method implementation of the technique is performed by an anticipation component and comprises receiving (S202) a service level anticipation request for the planned route of the UE, triggering (S204) determining an expected impact on the service levels of the one or more services at one or more locations of the planned route, and triggering (S206) sending a response to the service level anticipation request including information on the expected impact on the service levels.