A handover proactive association clearing support method and system supports minimizing handover times for at least one netsurfing end system, and optimizing a given market satisfaction function (MSF0) potentially depending on Internet-applications for whichever underlying HO technique, by potentially establishing pre-HO for free x/yz-, netsurfing x/yz-, and/or Sxyzj-association, called “clearing” them. An HO of an Ayz is optimal if its HO-time is “basically zero” and it complies with MSF0. The technical innovation of the method and system comprises for an Ayz determining any time its optimal HOs. This permanent predetermination of optimal HOs implies assessing permanently all parameters. Thus, when an Ayz must perform an HO, these pre-HO operations of the method/system would have already identified at least one optimal HO for it to a sharedIADx and/or an Sxyzj available to it and established the resp. x/yz-, netsurfing x/yz-, and Sxyzj-associations.