A method and a first radio network node (110) for managing input parameters to a set of models for prediction of a quality of service of a user equipment (120) are disclosed. The first radio network node (110) operates the set of models for prediction of the quality of service. The quality of service relates to when the user equipment (120) is served by a second radio network node (130) after a handover from the first radio network node (110) to the second radio network node (130). The first radio network node (110) configures (205) the second radio network node (130) to report the input parameters at least once before the handover. The input parameters are usable by the first radio network node (110) when predicting, by use of the set of models, the quality of service. A corresponding computer program and a carrier therefor are also disclosed.