Methods and messages for performing assignment and activation of voice bearer channels for mobile stations (MSs) in an unlicensed mobile access network (UMAN). URR (UMA radio resource) channel activation messages are exchanged between an MS and a UMA network controller (UNC) operating in the UMAN to...http://www.google.es/patents/US7471655?utm_source=gb-gplus-sharePatente US7471655 - Channel activation messaging in an unlicensed mobile access telecommunications system
Channel activation messaging in an unlicensed mobile access ...