نتایج جستجو برای: roadside units

تعداد نتایج: 174234  

2008
Biplab Sikdar

Traditional wireless Medium Access Control (MAC) protocols suffer from a number of drawbacks when used in vehicle to roadside networks. This paper proposes an efficient MAC protocol that addresses a number of critical aspects required for MAC protocols for vehicle to roadside networks including elimination of hidden terminals, prioritized and fast handoff, fairness among nodes and optimal choic...

Journal: :The Journal of Toxicological Sciences 2002

2009
Pino Caballero-Gil Candelaria Hernández-Goya Amparo Fúster-Sabater

Node authentication in VANETs is one of the most important research topics nowadays. VANETs present unique challenges such as high node mobility, real-time constraints, scalability, gradual deployment and privacy. No existent technique addresses all these requirements. In particular, both inter-vehicle and vehicle-to-roadside wireless communications present different characteristics that should...

2017
Maria Jesús Herrero Antonia Domingo-Salvany Rafael de la Torre

The data presented in this article are related to the paper "Prevalence of psychoactive substances, alcohol and illicit drugs, in Spanish drivers: A roadside study in 2015". (https://doi.org/10.1016/j.forsciint.2017.07.005) Domingo-(Salvany et al., 2017) [1]. In that paper it was not possible to directly compare 2015 results with previous editions for various reasons, one of which was the lack ...

2008
Peter G. Spooner

Road reserves have a rich history of human impacts, and are important social, economic and ecological component of agricultural landscapes in Australia. Road verge, or roadside environments are gaining greater recognition for their role in nature conservation. In Australia, road reserves are areas of public land retained for the development of future roads. Many road reserves were originally su...

Journal: :Applied sciences 2021

With many advances in sensor technology and the Internet of Things, Vehicle Ad Hoc Network (VANET) is becoming a new generation. VANET’s current technical challenges are deploying decentralized architecture protecting privacy. Because Blockchain features decentralized, distributed, mass storage, non-manipulation features, this paper designs using called Blockchain-based VANET. VANET can effecti...

Journal: :Wireless Communications and Mobile Computing 2022

Multimedia applications are expected to widely deploy over vehicular networks. In order meet the low-latency and high-speed transmission requirements of multimedia applications, edge caching is introduced reduce network traffic delay. Due limited storage cache server, an efficient approach for content management plays a decisive role performance. This paper proposes vehicle-to-infrastructure-ba...

2017
Yiheng Feng Shihong Huang Qi Alfred Chen Henry X. Liu

Existing traffic control systems are mostly deployed in private wired networks. With the development of wireless technology, vehicles and infrastructure devices will be connected through wireless communications, which might open a new door for cyber attackers. It is still not clear what types of cyber-attacks can be performed through infrastructure-toinfrastructure (I2I) and vehicle-to-infrastr...

2017
Krishan Kumar Mani Shekhar

The current trends in vehicular adhoc networks are bringing a variety of changes to the existing one. The primary focuses in the area of vehicular adhoc networks are connectivity and file distribution which is broadcast by roadside units to the onboard units during handoffs. The connectivity of vehicular adhoc network can be improved by the use of cognitive radio networks with interference mana...

2015
Ian Longley Elizabeth Somervell Sally Gray

Continuous and simultaneous observational particulate matter (measured as PM10), nitrogen dioxide (NO2) and oxides of nitrogen (NOx) data were captured at a kerbside site alongside a major highway in Auckland, New Zealand, and at a pair of setback sites within 250 m of the highway, day and night over 8 weeks. The three measurement sites were intended to allow emissions from the highway to be la...

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