A satellite (S/C) cellular commsystem includes user terminals (UT) for transmitting to, & receiving signals from the S/C, and includes gateways for transmitting to the S/C. The gateways receive and distribute signals from the S/C. Each gateway identifies itself to a UT by use of a location area identity...http://www.google.com/patents/US5974315?utm_source=gb-gplus-sharePatent US5974315 - Spacecraft cellular communication system
