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دسته بندی:
اینترنت اشیاء - Internet of Things
سال انتشار:
2017
عنوان انگلیسی مقاله:
Extending the coverage of the internet of things with low-cost nanosatellite networks
ترجمه فارسی عنوان مقاله:
گسترش پوشش اینترنت اشیاء با شبکه های کم هزینه نانوساختاری
منبع:
Sciencedirect - Elsevier - Acta Astronautica, 138 (2017) 95-101. doi:10.1016/j.actaastro.2017.05.030
نویسنده:
Vicente Almonacid a, *, Laurent Franck
چکیده انگلیسی:
Recent technology advances have made CubeSats not only an affordable means of access to space, but also
promising platforms to develop a new variety of space applications. In this paper, we explore the idea of using
nanosatellites as access points to provide extended coverage to the Internet of Things (IoT) and Machine-to
Machine (M2M) communications. This study is mainly motivated by two facts: on the one hand, it is already
obvious that the number of machine-type devices deployed globally will experiment an exponential growth over
the forthcoming years. This trend is pushed by the available terrestrial cellular infrastructure, which allows
adding support for M2M connectivity at marginal costs. On the other hand, the same growth is not observed in
remote areas that must rely on space-based connectivity. In such environments, the demand for M2M commu
nications is potentially large, yet it is challenged by the lack of cost-effective service providers. The traffic
characteristics of typical M2M applications translate into the requirement for an extremely low cost per trans
mitted message. Under these strong economical constraints, we expect that nanosatellites in the low Earth orbit
will play a fundamental role in overcoming what we may call the IoT digital divide. The objective of this paper is
therefore to provide a general analysis of a nanosatellite-based, global IoT/M2M network. We put emphasis in the
engineering challenges faced in designing the Earth-to-Space communication link, where the adoption of an
efficient multiple-access scheme is paramount for ensuring connectivity to a large number of terminal nodes. In
particular, the trade-offs energy efficiency–access delay and energy efficiency–throughput are discussed, and a
novel access approach suitable for delay-tolerant applications is proposed. Thus, by keeping a system-level
standpoint, we identify key issues and discuss perspectives towards energy efficient and cost-effective solutions.
Keywords: Cubesat applications | Internet of things | M2M | Energy-efficiency | Random access | Multiple-access
قیمت: رایگان
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