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Open AccessArticle

Performance Modeling Framework for IoT-over-Satellite Using Shared Radio Spectrum

1
School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
2
School of Information Technology, Deakin University, Geelong, VIC 3220, Australia
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(10), 1666; https://doi.org/10.3390/rs12101666
Received: 14 April 2020 / Revised: 11 May 2020 / Accepted: 19 May 2020 / Published: 22 May 2020
(This article belongs to the Special Issue Satellite Communication)
Delivering Internet-of-Things (IoT) connectivity over satellite is a promising solution for applications in remote and sparsely populated areas. These applications range from smart agriculture, logistics, asset tracking to emergency services. Using a shared radio spectrum with terrestrial services will facilitate a cost-effective and rapid deployment of IoT-over-Satellite since it reduces the administrative and financial hurdles of leasing a dedicated segment of the spectrum. Although IoT-over-Satellite communication provides larger service coverage, the vast number of IoT devices also increase the interference in the satellite uplink channel, and it becomes a significant challenge for the reliable performance of the IoT-over-satellite. In this paper, we propose a framework for modeling the performance of IoT-over-Satellite access systems when sharing the radio spectrum with terrestrial networks. We take into consideration several important aspects, namely; satellite orbit, terrestrial IoT devices uplink interference, atmosphere and gas absorption, and the probability of line-of-sight. The performance of the overall system is presented in terms of the uplink signal-to-interference-plus-noise ratio (SINR), and thus the time-availability of the satellite link during a typical pass. We focus on low earth orbit satellites due to their potential use in IoT applications, where we evaluate the framework using actual parameters of satellites located in 300–800 km orbits. Furthermore, the paper presents a numercial model to obtain the most suitable antenna beamwidth that maximizes the link-availability of the satellite link by the simultaneous reduction in the terrestrial interference and the boosting of the underlying IoT signal of interest. View Full-Text
Keywords: ISM band; IoT access networks; IoT over satellite; satellite-terrestrial spectrum sharing ISM band; IoT access networks; IoT over satellite; satellite-terrestrial spectrum sharing
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Chan, C.C.; Al-Hourani, A.; Choi, J.; Gomez, K.M.; Kandeepan, S. Performance Modeling Framework for IoT-over-Satellite Using Shared Radio Spectrum. Remote Sens. 2020, 12, 1666.

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