Parmi les normes de réseau, on compte également des usages assez spécifiques. C’est le cas du LoRaWAN, nécessaire pour permettre à des terminaux de communiquer au travers de passerelles avec une faible consommation énergétique mais aussi une longue portée. Cela est notamment utilisé pour les objets connectés, par exemple ceux utilisant des batteries.

Des sonnettes connectées aux enceintes intelligentes, il y a de fortes chances que votre habitation soit équipée d'objets connectés. Ceux-ci offrent de nombreux avantages, mais il arrive que le fabricant n'accorde pas suffisamment d'attention à la sécurité de ces appareils : ils représentent pourtant des cibles faciles pour les hackers. Découvrez notre analyse de ces appareils sous l'angle de la cybersécurité.

AST SpaceMobile, Inc., demonstrated its space-based 5G connectivity technology on 8th September, 2023, by placing a call from an unmodified Samsung Galaxy S22 smartphone in Maui, Hawaii, to a Vodafone engineer in Madrid, Spain. What makes AST SpaceMobile’s latest feat remarkable is that the call originated from a wireless dead zone, highlighting the prospects of space-based networks in bridging connectivity gaps, especially in remote and underserved areas.

The paper explores the challenges of constructing self-organizing wireless mobile ad hoc networks (MANETs) utilizing Optimal Link State Routing (OLSR) with MPR (MultiPoint Relay) optimization and quality control through the RSVP (Resource Reservation Protocol). Analytical expressions are presented for calculating the achievable network characteristics, including route acquisition time, network efficiency (routing overhead), packet transmission delay (end-to-end delay), and signal propagation losses between nodes assuming no packet collisions within the network nodes. The possibility of network scalability is analyzed depending on the scenarios of operation and the number of network nodes. Recommendations for the construction and scalability of self-organizing wireless networks are formulated based on the conducted evaluations and calculations.

Ford has suggested owners of vehicles equipped with its SYNC 3 infotainment system disable the Wi-Fi lest someone nearby exploits a buffer-overflow vulnerability and hijacks the equipment.

In the realm of technology, there exists a critical yet often overlooked component that plays a crucial role in the functioning of various electronic devices – Firmware. While most users are familiar with hardware and software, firmware operates in the background, serving as the bridge between the physical components and the software driving them. This blog aims to shed light on the significance of firmware, its impact on daily-life devices, and its boundless potential to shape the future of technology. Additionally, we will explore the latest trends in firmware with a focus on FOTA (Firmware Over-the-Air) updates and how VVDN helps companies seeking advanced firmware support for their next-gen devices.

Multimedia services with required Quality of Service (QoS) is one of the most critical challenges in Software Defined Network (SDN) based Vehicular Ad-Hoc Networks (VANETs). It forms an essential part of the Intelligent Transport System (ITS), where infotainment services play an essential role. Streaming multimedia is one of the most popular applications and has a high demand for VANET infotainment services. The major issues for multimedia streaming on VANET are scalability, mobility of vehicles, frequent connection failures, frequent change in network topology, and distributed architecture with heterogeneous devices. To overcome these problems and provide a better QoS, we propose using a hybridarchitecture with a combination of VANET and SDN called Software-Defined Vehicular Networks (SDVN).

Vehicle congestion is a severe issue in urban areas. To address this issue, a congestion-avoidance module is added to handle potential overcrowding. Automatic vehicle detection has also been a challenging issue in vehicle management. To address this issue, an automatic-vehicle-detection (AVD) module is employed with ACO-PT. The effectiveness of the proposed ACO-PT algorithm is demonstrated experimentally using network simulator-3 (NS-3) and Simulation of Urban Mobility (SUMO). Our proposed algorithm is compared with three cutting-edge algorithms. The results demonstrate that the proposed ACO-PT algorithm is superior to earlier algorithms in terms of energy usage, end-to-end delay, and throughput.

According to the simulation results obtained by analyzing the delay parameters, network QoS, and throughput on each protocol, the DSDV-AODV routing protocol performs better in three scenarios compared to QoS, delay, and throughput parameters in every scenario that uses network topology adapted to the conditions on the road intersections. The topology with 50 fixed + 50 mobile nodes yields the best results, with 0.00062 s delay parameters, a network QoS of 640 bits/s, and a throughput of 629.437 bits/s. Aside from the poor results on the network QoS parameters, the addition of mobile nodes to the topology influences both the results of delay and throughput metrics.

Murata vient de signer un accord de partenariat avec la société espagnole MobileKnowledge, dotée d’une expertise poussée dans la technologie radio à ultralarge bande (UWB) qui permet une mesure de distance ultraprécise grâce à la mesure de temps de vol d’impulsions radio ultracourtes, de l’ordre de quelques nanosecondes.

Briar is a messaging app designed for activists, journalists, and anyone else who needs a safe, easy and robust way to communicate. Unlike traditional messaging apps, Briar doesn’t rely on a central server – messages are synchronized directly between the users’ devices. If the Internet’s down, Briar can sync via Bluetooth, Wi-Fi or memory cards, keeping the information flowing in a crisis. If the Internet’s up, Briar can sync via the Tor network, protecting users and their relationships from surveillance.

Dans le droit fil de son adhésion fin 2022 au DECT Forum, organisation qui rassemble les sociétés qui soutiennent la technologie du même nom et ses évolutions, Nordic Semiconductor étoffe aujourd’hui son portefeuille de boîtiers-systèmes (SiP) de la famille nRF91 avec deux modèles prenant en charge la norme DECT NR+. Appellation "commerciale" de la norme Etsi DECT-2020 NR publiée en 2020, le DECT NR+ a été adoubé début 2022 par l’Union internationale des télécommunications dans sa recommandation IMT-2020.

Un projet de loi du gouvernement Borne propose d'autoriser l'activation à distance des micros et des caméras des smartphones et appareils électroniques. Ce que font déjà les GAFAM depuis des années. Pour s'opposer efficacement à la mise à disposition des moyens de surveillance commerciale au profit de l'appareil répressif de l’État, il faut mettre fin à l'impunité des multinationales du numérique

Si vous aimez bricoler aussi bien votre maison que des gadgets électroniques, Tasmota va occuper vos dimanches. Ce firmware domotique open source permet de créer des objets connectés basés sur les microcontrôleurs ESP8266 ou ESP32. La version 13.0 disponible depuis peu amène une avancée significative puisqu’elle gère plusieurs aspects de Matter, le nouveau standard de l’industrie qui facilite l’interopérabilité entre les produits et les plateformes.

Fon has been a global pioneer in WiFi networks and connectivity. For over a decade, we’ve been working with the world’s leading Telcos, providing solutions for their residential clients and public space environments. Now, more than ever, we are committed to bringing our knowledge and powerful resources to the world of hospitality.

Fon Wi-Fi is a global Wi-Fi community that shares its wireless network bandwidth with other users via social routing. As the name implies, social routing is a phrase used to describe the concept by which internet users freely share their wireless access points with others. Fon Wi-Fi is an excellent example of a community that uses social routing to provide internet access to all.

In Spain there are many mobile virtual network operators operating under the coverage of the four existing MNOs: Movistar, Orange, Vodafone and Yoigo. Here is a breakdown of some of the MVNOs and the coverage under which they operate.

As a startup founder, you need to do the impossible. You build something that has never been built before, with a team that’s never worked together before, while learning dozens of new skills, making countless no-going-back decisions, all before you run out of money (and energy). It’s like being lost in the wilderness, in the dark, with only a vague sense of where you’re heading. Imagine if you had a map.

Wouldn't it be wonderful if you could just build a great product, put it out there in the world and then watch as willing users flock gratefully to sign up for your new masterpiece? It sure as hell would make my life a lot easier. Being a serial startup founder I find myself praying to the user acquisition gods more often than I would like to admit, because getting your first users is bloody hard work. However, over time I have learned that there is some sort of playbook of activities (not a formula, such things are nearly always snake-oil) that will do the job of getting the first users onto your product, regardless of what it is.

A global league table of mobile data costs. The average cost of one gigabyte (1GB) was then calculated and compared from over 5,000 mobile data plans in 233 countries.