Numerical and Experimental Characterization of LoRa-Based Helmet-to-Unmanned Aerial Vehicle Links on Flat Lands: A numerical-statistical approach to link modeling

Bianco, Giulio Maria; Mejía-Aguilar, Abraham; Marrocco, Gaetano

doi:10.1109/map.2022.3176590

Cited by 5 publications

(5 citation statements)

References 44 publications

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“…The body-UAV PL is very different from that reported over flat lands (max. radio range ∼ 10 km) [18] and mountain canyons (max. radio range ∼ 350 m) [41], with more relevant small-scale fading, which can stimulate new challenges for localization and emergency communications.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, off-body links need to account for the variable Tx-Rx angular arrangements and the movements of the radio's wearer. The gain of the body-worn antenna and the polarization losses are hereafter taken into account using a numericalstatistical approach [18], as detailed in §II-B, whereas the movements can cause unpredictable body shadowing and This is the author's version of an article that has been published in IEEE Transactions on Antennas and Propagation.…”

Section: A Body-uav Propagation Modelingmentioning

confidence: 99%

“…) is derived from the received signal strength indicator (RSSI) and signal-to-noise ratio (SNR) recorded by the receiver LoRa board [3], [18] as…”

Section: A Body-uav Propagation Modelingmentioning

confidence: 99%

“…They could dramatically increase the survival chances of the targets to be rescued by avoiding terrestrial obstacles and speeding up operations through near-ground flights having altitudes of tens of meters [15], [16]. Thus, body-UAV links, viz., electromagnetic links between a body-worn device and a UAV [17], can maximize the benefits of using wearable LoRa devices [18]. However, available ground-UAV propagation models are not suitable for describing the signal attenuation in forests since they are tuned for urban environments mainly and do not account for the presence and movements of the radio wearer.…”

Section: Introductionmentioning

confidence: 99%

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Body-UAV Near-Ground LoRa Links Through a Mediterranean Forest

Bianco

Marrocco

2023

IEEE Trans. Antennas Propagat.

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LoRa low-power wide-area network protocol has recently gained attention for deploying ad-hoc search and rescue (SaR) systems. They could be empowered by exploiting body-UAV links that enable communications between a body-worn radio and a UAV-mounted one. However, to employ UAVs effectively, knowledge of the signal's propagation in the environment is required. Otherwise, communications and localization could be hindered. The radio range, the packet delivery ratio (PDR), and the large-and small-scale fading of body-UAV LoRa links at 868 MHz when the radio wearer is in a Mediterranean forest are here characterized for the first time with a near-ground UAV having a maximum flying height of 30 m. A log-distance model accounting for the body shadowing and the wearer's movements is derived. Over the full LoRa radio range of about 600 m, the new model predicts the path loss (PL) better than the stateof-the-art ones, with a reduction of the median error even by ∼ 10 dB. The observed small-scale fading is severe and follows a Nakagami-m distribution. Extensions of the model for similar scenarios can be drawn through appropriate corrective factors.

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Section: Discussionmentioning

confidence: 99%

Section: A Body-uav Propagation Modelingmentioning

confidence: 99%

“…) is derived from the received signal strength indicator (RSSI) and signal-to-noise ratio (SNR) recorded by the receiver LoRa board [3], [18] as…”

Section: A Body-uav Propagation Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Body-UAV Near-Ground LoRa Links Through a Mediterranean Forest

Bianco

Marrocco

2023

IEEE Trans. Antennas Propagat.

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“…Leveraging LoRaWAN in Unmanned Aerial Systems (UAS) enables the establishment of a range and low power wireless network. However, it should be noted that a limitation of LoRaWAN UAS Is their range-10 kilometers before requiring proximity to a LoRaWAN gateway (Bianco, Mejia-Aguilar, & Marrocco, 2022;bin Edi, Abd Rashid, Ismail, & Cengiz, 2022;Calabrò & Giuliano, 2021;Cardoso et al, 2022). This constraint limits their applicability in long distance scenarios.…”

Section: Lorawanmentioning

confidence: 99%

Internet of Things (IoT): Wireless Communications for Unmanned Aircraft System

VO,

WANG,

YANG

et al. 2023

EPSTEM

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In times of technological advancements, the use of aerial vehicles (UAVs), commonly known as drones, has become increasingly prevalent across various commercial and industrial sectors. UAVs find applications in agriculture, filmmaking, law enforcement, package delivery, aerial photography, videography, etc. There are benefits associated with utilizing UAVs. One key advantage is their ability to cover areas quickly and efficiently while accessing locations that may be challenging or hazardous for humans. Wireless communication technologies play a role in ensuring the functioning of Unmanned Aircraft Systems (UAS). Without these technologies, the United States of America would face difficulties communicating with ground control stations or relaying information to operators. This would significantly impede the country’s mission execution and overall responsibilities. Wireless communication technologies (WCT) enable the United States to maintain awareness—essential for achieving successful and secure operations. Additionally, wireless technologies allow for Unmanned Aerial Systems (UAS) control, which is crucial for missions carried out in hostile or dangerous environments. The increasing usage of drones has highlighted the need to improve networks in the United States focusing on their ability to work together effectively handle volumes of data and provide reliable broadband connectivity. This research delves into communication technologies, in this domain emphasizing their advantages, limitations, industry standards and potential areas for future investigation to address the challenges revealed by this study.

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