Search results for "vanet"

Collecte des données Véhicule/Environnement et remontée avec réseau Cellulaire et réseau Véhiculaire

2019

Vertical handover is one of the key technologies that will facilitate the connected and autonomous vehicles deployment. Today, the emergence of Vehicular Ad hoc Networks (VANETs): Vehicle-to-Vehicle (V2V) communications, Vehicle-to-Infrastructure (V2I) and Vehicle-to-Everything (V2X) has enabled new applications such as Cooperative Intelligent Transport Systems (C-ITS), real-time applications (for example, autonomous driving), road traffic management applications and comfort applications. However, these networks are characterized by a high level of mobility and dynamic change in the topology, which generates scattered networks and requires handover mechanisms for maintaining ongoing session…

Platform for efficient and secure data collection and exploitation in intelligent vehicular networks

2016

Nowadays, automotive area is witnessing a tremendous evolution due to the increasing growth in communication technologies, environmental sensing & perception aptitudes, and storage & processing capacities that we can find in recent vehicles. Indeed, a car is being a kind of intelligent mobile agent able to perceive its environment, sense and process data using on-board systems and interact with other vehicles or existing infrastructure. These advancements stimulate the development of several kinds of applications to enhance driving safety and efficiency and make traveling more comfortable. However, developing such advanced applications relies heavily on the quality of the data and therefore…

VANET prototipa realizācija ar WiFi protokolu palīdzību

2016

VANET tehnoloģija ļauj automobiļiem savā starpā komunicēt un informēt vienam otru par bīstamām situācijām uz ceļa. Veicot ES ceļu satiksmes negadījumu skaitu izpēti ir redzams, kā ir nepieciešama sistēma, kas spēj atbalstīt automobiļa vadītājus ceļā. Maģistra darba pētījuma mērķis ir izpētīt VANET tehnoloģiju, tās aktualitāti un iespējas, un izstrādājot prototipu izdarīt pētījumu, kurā pēc eksperimentu rezultātiem varēs izdarīt secinājumu, vai WiFi protokols spēj realizēt VANET tehnoloģiju nepieciešamā apjomā. Maģistra darbs sadalīts deviņās nodaļās. Darba pirmajā daļā tiek apskatīta un pētīta teorētiskā daļa, bet otrajā daļā tiek izveidots WiFi prototips un veikti eksperimenti. Maģistra da…

Collaborative Content Downloading in VANETs with Fuzzy Comprehensive Evaluation

2019

Vehicle collaborative content downloading has become a hotspot in current vehicular ad-hoc network (VANET) research. However, in reality, the highly dynamic nature of VANET makes users lose resources easily, and the transmission of invalid segment data also wastes valuable bandwidth and storage of the users&rsquo

Video Streaming Distribution in VANETs

2011

Streaming applications will rapidly develop and contribute a significant amount of traffic in the near future. A problem, scarcely addressed so far, is how to distribute video streaming traffic from one source to all nodes in an urban vehicular network. This problem significantly differs from previous work on broadcast and multicast in ad hoc networks because of the highly dynamic topology of vehicular networks and the strict delay requirements of streaming applications. We present a solution for intervehicular communications, called Streaming Urban Video (SUV), that 1) is fully distributed and dynamically adapts to topology changes, and 2) leverages the characteristics of streaming applica…

Col : A Data Collection Protocol for Vanet

2012

International audience; In this paper, we present a protocol to collect data within a vehicular ad hoc network (VANET). In spite of the intrinsic dynamic of such network, our protocol simultaneously offers three relevant properties: (1) It allows any vehicle to collect data beyond its direct neighborhood (i.e., vehicles within direct communication range) using vehicle-to-vehicle communications only (i.e., the infrastructure is not required); (2) It tolerates possible network partitions; (3) It works on demand and stops when the data collection is achieved. To the best of our knowledge, this is the first collect protocol having these three characteristics. All that is chiefly obtained thanks…

The quarry waste "Ravaneti" in Sicily: geomorphologic aspect

2009

A framework for Population Protocols in VANETs

2023

Ajoneuvojen langattomissa verkoissa (VANET:ssa) toimivien turvallisuussovellusten tietoturvallisuus

2017

Tieliikenteessä ilmenevien ongelmien, kuten onnettomuuksien ja ruuhkien ratkaisuissa on alettu hyödyntää tieto- ja viestintäteknologiaa. Tällaisia ratkaisuja kutsutaan älykkäiksi liikennejärjestelmiksi. Älykkäiden liikennejärjestelmien avulla voidaan lisätä tärkeän ja hyödyllisen tiedon vaihtoa tiellä liikkujien kesken. Tässä tiedonvaihdossa ajoneuvojen langattomat verkot eli VANET nähdään keskeisenä teknologiana, sillä niiden avulla ajoneuvot voivat automaattisesti kommunikoida keskenään sekä tieinfrastruktuurin kanssa. VANET mahdollistaa useita liikenteen turvallisuutta parantavia sovelluksia, eli turvallisuussovelluksia, mutta muiden langattomien verkkojen tavoin myös VANET sekä sen avul…