Performance Analysis of LEO Satellite Networks

Abstract

Abstract. We present an analytical model for computing call blocking probabilities in a LEO satellite network that carries voice calls. Both satellite-fixed and earth-fixed constellations with inter-orbit links and hand-offs are considered. The model is analyzed approximately by decomposing it into sub-systems. Each sub-system is solved in isolation exactly using a Markov process, and the individual results are combined together through an iterative method. Numerical results demonstrate that our method is accurate for a wide range of traffic patterns.

Minimum flow maximum residual routing in LEO satellite networks using routing set

“…In [16], it is shown that static routing gives better results than dynamic routing. In [17][18][19] the FSA model is used to calculate the blocking probability. In [20], it is believed that the FSA assumption is not realistic and the path has to do handover in every moment where the underlying network architecture changes due to the satellite motion and the routing must be done according to the probabilistic model that chooses the least probable handover ISLs as the most convenient path.…”

An Appropriate Traffic Routing Scheme for Node-to-Node Communications in LEO Satellite Network Using Hybrid Mesh Topology

“…Earth is divided into cells with users in a cell served by one or more satellites. LEOs are expected to provide wireless mobile communication services from any place to any other place on earth and support wireless communication from and to areas not covered by cellular or geostationary phone systems [5,6].…”

“…LEO satellites can be used to supplement terrestrial networks by providing links between points on the surface that would be difficult or too expensive to connect with terrestrial links. A more ambitious approach is to replace large parts of terrestrial networks by using inter-satellite links to inter-connect a number of satellites into a LEO satellite network, as shown in Figure (3), three satellites in a single orbit connected with ISLs [4,6].…”

“…A closer look on the planar projection of the constellation in Figure (6), facilitates the first step in the ISL hybrid topology design. Due to the perfect symmetry of the constellation it is sufficient to consider generic types of ISLs between satellite 0 and its neighbors as an example.…”