A communications system includes a satellite communications component having at least one satellite and at least one terrestrial gateway, and also a wireless terrestrial communications component having at least one repeater and at least one mobile switching center. The at least one gateway and the at...http://www.google.fr/patents/US6072768?utm_source=gb-gplus-shareBrevet US6072768 - Automatic satellite/terrestrial mobile terminal roaming system and method
Automatic satellite/terrestrial mobile terminal roaming system and method
