Performance evaluation of LEO satellite constellations with inter-satellite links under self-similar and Poisson traffic

lation study for the evaluation in low earth orbit (LEO) ellations, used for the of high-speed networks, is paper. The proposed model end the traffic process at the supporting successfully the f self-similar traffic sources , ach that has been considered an the well-known Poisson, munications. dy for the establishment of s (ISLs) and the design of the ace segments is presented and of the integrated system is ms of delay and throughput on the earth surface. Despite these advantages, the delay due to the satellite altitude which is still significant and the dynamic topology of the ISL subnetwork are making the problem of delay minimization, rather complicated. The analysis of a satellite system, through simulation, comprises many issues [1],[2],[3],[4],[19]. Some of these are the precise definition of the covered area as the satellite is moving, the establishment of the intersatellite links (if the system employs ISL's), the dynamic routing in the derived topology, the minimization of path switching, the establishment of the up-down link, the handoff conditions and finally the pattern analysis of the traffic originating from or terminating to the earth stations. In this study a system similar to Motorola’s Celestri, is examined in terms of traffic analysis and delay performance. The orbit altitude of the proposed system is taken equal to 1381 Km instead of 1400 Km. This INTRODUCTION