A5081269372- Satellite Communication Systems
- Opportunistic and Delay-Tolerant Networks
- Distributed systems and fault tolerance
- IoT Networks and Protocols
- Mobile Ad Hoc Networks
- Caching and Content Delivery
- Age of Information Optimization
- IoT and Edge/Fog Computing
- Spacecraft Design and Technology
- Radiation Effects in Electronics
- Space Satellite Systems and Control
- Energy Harvesting in Wireless Networks
- Interconnection Networks and Systems
- Optical Wireless Communication Technologies
- COVID-19 Digital Contact Tracing
- Mobile Agent-Based Network Management
- VLSI and Analog Circuit Testing
- Advanced Optical Network Technologies
- Wireless Communication Networks Research
- Bluetooth and Wireless Communication Technologies
- Software-Defined Networks and 5G
- Underwater Vehicles and Communication Systems
- Low-power high-performance VLSI design
- Energy Efficient Wireless Sensor Networks
- Space Science and Extraterrestrial Life
Consejo Nacional de Investigaciones Científicas y Técnicas
2016-2025
Saarland University
2019-2025
Institut National des Sciences Appliquées de Lyon
2021-2024
Universidad Nacional de Córdoba
2014-2024
Université Claude Bernard Lyon 1
2021-2024
Centro Científico Tecnológico - Córdoba
2018-2024
Institut national de recherche en informatique et en automatique
2021-2024
Institute of Software
2024
i2CAT
2024
Cordoba University
2022
This study applies satellite constellations in Internet of Things (IoT) communications, specifically within low-power wide-area network (LPWAN) technologies the NewSpace context. It comprehensively categorizes and describes functionality typology low Earth orbits (LEOs), examines societal impacts these technologies, provides an in-depth analysis IoT communication architectures protocols utilizing satellites. Additionally, identifies addresses challenges faced this domain while highlighting...
During the past 20 years, space communications technologies have shown limited progress in comparison to Internet-based networks on Earth. However, a brand new working group of IETF with focus DTN promises extend today's Internet boundaries embrace disruptive such as those seen networks. Nevertheless, several challenges need be overcome before operative DTNs can deployed orbit. We analyze state art effective design, planning, and implementation forthcoming network opportunities (contacts)....
Large geographical regions of our planet remain uncovered by terrestrial network connections. Sparse and dense constellations near Earth orbit satellites can bridge this gap providing Internet Things (IoT) connectivity on a worldwide scale in flexible cost-effective manner. This article presents STEREO: novel space-terrestrial integrated IoT architecture spanning direct- indirect-to-satellite access from assets the surface. Framed identified requirements, we analyze NB-IoT LoRa/LoRaWAN...
In this article, we introduce and design sparse constellations for direct-to-satellite Internet of Things (DtS-IoT). DtS-IoT does not require a ground infrastructure, because the devices are directly connected to low earth orbit satellites acting as orbiting gateways. The key idea is significantly reduce number in-orbit by proper dimensioning delivery delay anyway present in resource-constrained IoT services an optimal positioning First, analyze long-range modulation (LoRa)/LoRaWAN...
Direct-to-Satellite IoT (DtS-IoT) is a promising approach to deliver data transfer services devices in remote areas where deploying terrestrial infrastructure not appealing or feasible. In this context, low-Earth orbit (LEO) satellites can serve as passing-by gateways which offload buffered to. However, transmission distances and channel dynamics, combined with highly constrained on the ground makes of DtS-IoT very challenging problem. Here, we present LoRa-based approaches realize scalable...
When faced with a choice between exploring an unknown option vs exploiting they know well, older adults explore less and exploit more than younger adults. Recent work has suggested that one driver of this age difference in exploration is reduction the extent to which use “random exploration” – driven by behavioral variability. Here we investigate potential mechanisms for age-related random through lens drift diffusion model (DDM) explore-exploit choice. In model, can be modulated two...
Existing Internet protocols assume persistent end-to-end connectivity, which cannot be guaranteed in disruptive and high-latency space environments. To operate over these challenging networks, a store-carry-and-forward communication architecture called Delay/Disruption Tolerant Networking (DTN) has been proposed. This work provides the first examination of performance robustness Contact Graph Routing (CGR) algorithm, state-of-the-art routing scheme for space-based DTNs. this end, after...
Delay-tolerant networks (DTNs) have become a promising architecture for wireless sensor systems in challenged communication environments where traditional solutions based on persistent connectivity either fail or show serious weaknesses. As result, different routing schemes been investigated that take into account the time-evolving nature of network topology. Among them, contact graph has proposed space with predictable connectivity. In order to evaluate decisions, DTN nodes need know plan...
A global Internet of Things is possible by embracing constellations satellites acting as orbiting gateways in a Direct-to-Satellite IoT (DtS-IoT). By removing the dependency on ground gateways, DtS-IoT enables direct service regions illuminated passing-by satellite. After an in-depth overview relevant experiments and candidate technologies, we discover that specific configurations Long-Range (LoRa) network protocol specification are particularly appealing to realize vision. Specifically,...
Global Navigation Satellite Systems (GNSSs) are the most widespread technology for Position and Timing (PNT). They have been traditionally deployed exploiting Medium Earth Orbit (MEO) or Geosynchronous (GSO) satellites. To meet future demands overcome MEO GSO limitations, GNSSs based on Low (LEO) constellations investigated as a radical system change. Although characterized by higher Doppler effect, PNT service supplied LEO satellites can provide received signals that about 30 dB stronger....
The design and launch of large-scale satellite networks create an imminent demand for efficient delay-minimising routing methods. With the rising number satellites in such constellations, pre-computing all shortest routes between times becomes more infeasible due to space time limitations. Even though distributed on-demand methods were developed specific LEO network configurations, they are not suited increasingly popular mega-constellations based on Walker Delta formations. contributions...
This study outlines a technical framework for Internet of Things (IoT) communications on Mars, leveraging Long Range (LoRa) technology to connect Martian surface sensors and orbiting satellites. The designed architecture adapts terrestrial satellite constellation models environments the specific needs interplanetary communication with Earth. It incorporates multiple layers, including IoT nodes, linkage, configuration, Earth communication, emphasizing potential applications. analysis covers...
Quick UDP Internet connection(QUIC) protocol and bottleneck bandwidth round-trip propagation time (BBR) based congestion control algorithm are two major contributions out of Google's persistent attempts to make the faster. QUIC is an user level reliable running on top enable evolution transport mechanisms, while BBR designed for better TCP control. Although in different directions, they also converge with support QUIC. Many researches have proved performance network scenarios, but evaluation...
Power demands of communication technologies between LEO small-satellites are difficult to counterbalance by solar infeed and on-board battery storage, due size weight limitations. This makes the problem battery-powered inter-satellite a very one. Its management requires profound understanding as well techniques for proper extrapolation electric power budget part satellite-to-ground design. We discuss how construction contact plans in delay tolerant networking can profit from sophisticated...