Opportunistic networking represents a promising paradigm for support of communications, specifically in infrastructureless scenarios such as remote areas communications. In principle in opportunistic environments, we would like to make available all the applications thought for traditional wired and wireless networks like file-sharing and content distribution. In this paper, we present a delay-tolerant scenario for file sharing applications in rural areas, where an opportunistic approach is exploited.

There are two variations of mobile network: Infra-structured network: Infra-structured network are connections with fixed and wired gateways. Infrastructure mode wireless networking bridges wireless network to wired Ethernet network. Infrastructure mode wireless also supports central connection points for WLAN clients. Ad-hoc network: an ad hoc network typically refers to any set of networks where all devices have equal status on a network and networks are liberal to associate with any other ad hoc network devices in link range.

Reactive Routing Protocol is a bandwidth efficient on-demand routing protocol for Mobile Ad-Hoc Networks. Two key mechanism of reactive protocol are Route Discovery and Route Maintenance. Route Discovery mechanism is responsible for the discovery of new routes. Route Maintenance mechanism is for the detection of link breaks and repair of an existing route.

L’Office de Tourisme du Cotentin vous permet de bénéficier d’un tarif avantageux sur la mise en service et l’abonnement mensuel de la solution Clic & Surf de la société 2ISR, partenaire avec les Offices de Tourisme de France depuis 2010.

Alors que les marques comptent pulvériser les records de ventes chaque année, nous vous proposons un top des smartphones les plus vendus de tous les temps.

Le classement vient de tomber : l’iPhone 13 est le smartphone le plus vendu au monde en 2022 en représentant à lui seul 5% des ventes globales. Selon les données de Counterpoint Research, Apple a largement dominé les ventes de smartphones l’an dernier en classant 8 modèles d’iPhone dans le Top 10 des ventes mondiales. […]

This project shows how to connect the TTGO T-Call ESP32 SIM800L board to the Internet using a SIM card data plan and publish data to the cloud without using Wi-Fi. We’ll program this board with Arduino IDE.

Learn why developing blue ocean markets is your best chance for growth and profits.

Mesh WiFi or Whole Home WiFi systems is composed of the main router that connects at once to your modem, and a sequence of satellite tv for pc modules, or nodes, placed around your home for full WiFi protection. Now See Mesh Network Advantages and Disadvantages

Les forces d'intervention et les services de renseignement sont toujours en quête de produits technologiques et novateurs. Le Salon Sofins, qui s'est ouvert le 28 mars près de Bordeaux, est un lieu incontournable pour rencontrer de nouvelles pépites.

Local governments and companies are investing in the deployment of 5G networks to improve the services they provide to citizens and, at the same time, increase efficiency. Incorporating new technologies such as the Internet of Things (IoT), Artificial Intelligence (AI), and automatic learning to improve the management of cities and their services, such as public safety or traffic management, is already a reality. Edge computing is the key that makes this smart universe possible.

Extension du réseau mobile public dans vos locaux d’entreprise pour une couverture homogène et de qualité sur toutes vos surfaces.

These chapters around “the finance behind startup investing” aim at sharing learnings based on 20 years of experience gathered working at Elaia. In recent years, VC has gained quite the reputation with many SaaS startups reaching the stratosphere and becoming household names. Nevertheless, it is a domain that is sometimes oversimplified to putting in money, waiting for 10 years and hoping it makes us rich in the process. It is not made for the faint of heart or ones without discipline and thus requires some initiation to understand what each term or practice really means and implies.

MANET is a type of wireless network that does not rely on a fixed infrastructure such as a router or access point. The origin of MANETs can be traced back to the 1970s when researchers began exploring the use of packet radio networks. These networks were created to provide direct communication between devices without the use of a fixed infrastructure. As mobile computing and innovations in wireless technology allowed for the creation of complex and dynamic networks, the idea of an ad hoc network as we know it today started to take shape. Since then, Research in the field of MANETs has continued to evolve, with new protocols, algorithms, and applications being developed to address the unique challenges of these networks.

Results show that with the Nakagami fading shape factor increases, the connectivity probability increases. The shadowing fading can improve connectivity in the VANET; the path loss exponent, transmission distance, and signal-to-noise ratio (SNR) threshold have a negative impact on connectivity probability. The transmit power, vehicle density, and path loss threshold value have a positive impact on connectivity.

When an aerial vehicle such as a helicopter drops off officers and then gets to altitude, it can lose all notion of where they are and where they went. Worse, the communications challenges between the ground and air can make it difficult for officers in the air to direct agents on the ground, give them updates, or even get distress calls. This can make operations more dangerous for CBP officers and agents like special response teams (SRT) who work with AMO. Mobile mesh networking can help eliminate all of these challenges, and ensure that officers in the air never lose communications and situational awareness of CBP personnel – even if they are required to go inside a building, a parking garage, or the hull of a ship.

The communication between vehicles can be interfered with by Denial of Service (DoS) attacks such as jamming attacks, launching on the control channel, and causing significant network performance degradation. These attacks have an impact on the network by lowering network performance; earlier, there has been a lot of study for improving network performance by employing routing protocols.

Vehicular ad hoc networks (VANETs) are an emerging type of mobile ad hoc networks (MANETs) with robust applications in intelligent traffic management systems. VANET has drawn significant attention from the wireless communication research community and has become one of the most prominent research fields in intelligent transportation system (ITS) because of the potential to provide road safety and precautionary measures for the drivers and passengers. In this survey, we discussed the basic overview of the VANET from the architecture, communication methods, standards, characteristics, and VANET security services.

The US Army’s Handheld, Manpack, Small Form Fit (HMS) programme is the most ambitious tactical communications modernisation programme the United States armed forces have ever seen.

In the Internet of Things (IoT) paradigm, smart devices equipped with embedded technology automatically collect information from shared resources (e.g., Internet accesses, physical devices, etc.) and aggregate them to provide new services to end users. The “things” commonly deployed in IoT systems are RFID tags, for unique identification; sensors, to detect physical changes in the environment; and actuators, to pass information to the environment. The range of IoT applications is rapidly increasing and already covers several domains, including environmental monitoring, healthcare, personal and social, security and surveillance, smart environments (home, offices, cities), transportation, and logistics (automotive). The practical development is driven by the evolution of the wireless networking technologies which are facing a number of challenges.