A system and method for providing secure one-way transmissions in a vehicle wireless communications system. The system and method rely on a clock signal to assure that the vehicle and server receive proper messages. The vehicle and the server will periodically synchronize their internal clocks to a global...http://www.google.fr/patents/US7805612?utm_source=gb-gplus-shareBrevet US7805612 - Use of global clock to secure and synchronize messages in XM and SMS messages to a vehicle
Use of global clock to secure and synchronize messages in XM and SMS ...
