An unlicensed wireless service is adapted to generate the interface protocols of a licensed wireless service to provide transparent transition of communication sessions between a licensed wireless service and an unlicensed wireless service. In one embodiment, a mobile station includes level 1, level...http://www.google.fr/patents/US8090371?utm_source=gb-gplus-shareBrevet US8090371 - Network controller messaging for release in an unlicensed wireless communication system
Network controller messaging for release in an unlicensed wireless ...
