Packet Satellite System with Multiuplinks and Priority Discipline

The performance of a packet satellite system with multiple uplink channels using priority service discipline for successful packets on the uplinks is analyzed in this paper. The satellite is assumed to provide either no on-board storage or an infinite buffer for successful packets on the uplinks. The delay-throughput characteristics for each priority as well as the entire system have been obtained. Expression for the z-transform of the system at equilibrium has been derived for the case of infinite buffer. As expected, it is demonstrated through examples that packets with lower priorities have lower throughput and suffer longer delay.