Satellitenkommunikationssystem

摘要

Communications between low earth orbit satellites (S) and earth-based terminals (10,12,P,M,F,G) are effected by packet-based signals (709) employing a connection-less protocol without establishing or maintaining a virtual circuit or channel through the system. Each packet (422) comprises a header (424) including a destination field (432) and one or more control fields relating to packet priority and type. Packets of the same signal are routed independently of each other.