Methods and messages for performing handovers between an unlicensed mobile access network (UMAN) comprising a first radio access network and a second radio access network. URR (UMA radio resource) handover messages are exchanged between a mobile station (MS) and a UMA network controller (UNC) operating...http://www.google.co.uk/patents/US7565145?utm_source=gb-gplus-sharePatent US7565145 - Handover messaging in an unlicensed mobile access telecommunications system
