Predicting presence of a mobile user equipment

A method, system, user equipment and computer program for predicting presence of a mobile user equipment, that includes: determining a set of time-distributed locations of a number of mutually associated mobile user equipments (141, 142, 143); calculating an aggregated location (171) as a function of a location distribution of the set of locations; for each mobile user equipment (141, 142, 143), predicting a probability that the mobile user equipment will be present at the aggregated location (171) at a future time; and initiating sending, to any of the mobile user equipments (141), a message indicating that another mobile user equipment (142, 143) of the mobile user equipments (141, 142, 143) is predicted to be present at the aggregated location (171) at a specific future time.