Coverage and Capacity Analysis of LEO Satellite Network Supporting Internet of Things

Abstract

In this paper, we focus on the coverage and capacity analysis for LEO satellite network supporting Internet of Things. We propose a metric of coverage degree to measure average cover level during a return circle of a satellite constellation in different latitudes, and furter consider the spot beam communication process with TDMA as a discrete time queueing process to caculate the number of devices in a unit area, which can be accessed during a period. Finally, we derive the relationship among device density, maximum tolerant delay, and coverage degree of the satellite constellation. The obtained theoretical results are verified by extensive simulation experiments.