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Published in: Wireless Networks 5/2019

30-01-2018

Long-range and energy-efficient optical networking for tiny sensors

Authors: Boaz Ben-Moshe, Nir Shvalb, Kobi Gozlan, Harel Levi

Published in: Wireless Networks | Issue 5/2019

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Abstract

Acquiring real time sensory data using remote swarms of tiny sensors depends on efficient wireless networking. Often, battery longevity of the sensors is a critical design requirement, which makes long-range RF transmission inadequate for this task. A common solution is to use short-range and energy-efficient RF protocols within the swarm, then communicate with the outside world via a capable agent or a networking gateway. In this paper we suggest an alternative networking model, which enables the swarm to operate independently, without the assistance of an intermediate proxy. Specifically, we present a networking model in which the sensors in the swarm transmit data using energy-efficient free space optical links (FSO). We discuss the details of aiming optical transmission interfaces in the directions of distant sinks, such as antenna towers, drones and even LEO-satellites. This FSO-based network architecture poses various data collection problems, which are related to the directional nature of optical transmitters and receivers. Using simulations we address several such problems, and demonstrate the viability of the model for sensory data collection.

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Footnotes
1
Line of sight versus none line of sight.
 
2
Various raging estimation methods can be used including SNR or RSSI, sonic ranging and even RF Time-of-Flight ranging.
 
3
Note that this simulation is 2D, which implies that the sinks’ flying height is given and the nodes’ LOS/NLOS maps are receptive to that height.
 
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Metadata
Title
Long-range and energy-efficient optical networking for tiny sensors
Authors
Boaz Ben-Moshe
Nir Shvalb
Kobi Gozlan
Harel Levi
Publication date
30-01-2018
Publisher
Springer US
Published in
Wireless Networks / Issue 5/2019
Print ISSN: 1022-0038
Electronic ISSN: 1572-8196
DOI
https://doi.org/10.1007/s11276-018-1668-5

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