scholarly journals Análise de Desempenho do IEEE 802.11p: Simulações versus Experimentos Reais

2018 ◽  
Author(s):  
Thales T. Almeida ◽  
Lucas de C. Gomes ◽  
Fernando M. Ortiz ◽  
José Geraldo R. Júnior ◽  
Luís Henrique M. K. Costa
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Ieee 802.11P ◽  
Vehicle To Vehicle ◽  
Vehicle To Infrastructure ◽  
Hoc Networks ◽  
Road Side Units

A embarcação de dispositivos com o padrão IEEE 802.11p no ambiente automotivo é considerado um fator crucial para alavancar a segurança e a eficiência no trânsito, o que torna fundamental a avaliação deste padrão antes de sua completa integração com sistemas reais. Entretanto, devido ao custo elevado e à pouca oferta de dispositivos comerciais, a maioria dos trabalhos envolvendo VANETs (Vehicular Ad-hoc NETworks) ainda é realizada apenas no campo das simulações. Visando comparar uma possível equivalência, este trabalho investiga os resultados de medições reais envolvendo cenários V2I (Vehicle-to-Infrastructure) e V2V (Vehicle-to-Vehicle). Para isso, foram confrontados os resultados obtidos por meio de OBUs (On-Board Units) e RSUs (Road Side Units) com os obtidos pelo simulador NS-3. Três métricas de rede foram avaliadas: o alcance máximo, a taxa de entrega de pacotes e o tempo entre recepções de pacotes. Também foi analisada a influência dos diferentes tipos de modulação permitidos no referido padrão e de diversos padrões de mobilidade. Este trabalho representa uma referência para a completa integração do padrão IEEE 802.11p e contribui para a validação e evolução dos modelos de simulação atuais.

scholarly journals Multicasting technique for path establishment in vehicular ad hoc networks

2018 ◽  
Vol 7 (2.4) ◽  
pp. 204
Author(s):  
Sukhpreet Kaur ◽  
Er Sharad
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Research Work ◽  
Vehicle Type ◽  
Vehicle To Vehicle ◽  
Adhoc Network ◽  
Vehicle To Infrastructure ◽  
Simulation Results ◽  
Hoc Networks

The vehicular adhoc network is the decentralized type of network in which vehicles can move from one location to another. In the network two type of communication is possible which are vehicle to vehicle and vehicle to infrastructure. In the vehicle to vehicle type of path establishment is the major issue of the network. In this research work, multicasting routing technique is proposed for the path establishment from source to destination. The proposed technique is implemented in NS2 and simulation results shows improvement in network delay for path establishment  

Block-Chain Based Incentive in Vehicular Ad Hoc Networks Using Credit Coin

2020 ◽  
Vol 17 (8) ◽  
pp. 3512-3515
Author(s):  
J. Refonaa ◽  
Y. Pavan Teja ◽  
Y. Manjunath ◽  
S. Dhamodaran ◽  
S. L. Jany Shabu ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Denial Of Service ◽  
Medium Access ◽  
Vehicle To Vehicle ◽  
Traffic Stream ◽  
Vehicle To Infrastructure ◽  
Block Chain ◽  
Hoc Networks

Vehicular ad hoc networks (VANET) are otherwise called wise transportation frameworks. VANET guarantees auspicious and exact correspondences between vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) to improve street wellbeing and upgrade the productivity of traffic stream. Because of its open remote limit and high versatility, VANET is powerless against pernicious hubs that could get entrance into the system and do genuine medium access control (MAC) layer dangers, for example, denial of service attacks, information alteration attacks, pantomime attacks, Sybil attacks, and replay attacks. With the prevalence of Block Chain comes grave security related concerns. Accomplishing security and discernibility at the same time stays an open inquiry. Endeavors have been made to address the issues, while they may expose to explicit situations. We propose a vehicular declaration convention Echo-Announcement in Credit Coin. It accomplishes productivity and protection safeguarding for the useful use in sending declarations. We plan an impetus component dependent on Block chain in Credit Coin. Clients oversee notoriety focuses while they acquire or spend coins as motivating forces. In the interim, Credit Coin despite everything jam security and accomplishes obscurity. Besides, in view of Block chain, Credit Coin forestalls numerous security attacks and accomplishes contingent protection since Trace administrator will follow malignant hubs when a startling occasion happens.

Mobility-based Enhancement for Channel Coordination of IEEE 802.11p on Vehicular Ad-hoc Networks Over V2I

2021 ◽  
Author(s):  
Sabri Al-Shaibany ◽  
Akram A. Almohammedi ◽  
Vladimir Shepelev ◽  
Sam Darshi ◽  
Abdulmalek Al-Hemyari ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Ieee 802.11P ◽  
Channel Coordination ◽  
Hoc Networks

scholarly journals Cooperation as a Service in VANET: Implementation and Simulation Results

2012 ◽  
Vol 8 (2) ◽  
pp. 153-172 ◽  
Author(s):  
Hajar Mousannif ◽  
Ismail Khalil ◽  
Stephan Olariu
Keyword(s):  
Ad Hoc Networks ◽  
Traffic Safety ◽  
Vehicular Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Network Routing ◽  
The Road ◽  
Vehicle To Vehicle ◽  
Simulation Results ◽  
Hoc Networks

The past decade has witnessed the emergence of Vehicular Ad-hoc Networks (VANET), specializing from the well-known Mobile Ad Hoc Networks (MANET) to Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) wireless communications. While the original motivation for Vehicular Networks was to promote traffic safety, recently it has become increasingly obvious that Vehicular Networks open new vistas for Internet access, providing weather or road condition, parking availability, distributed gaming, and advertisement. In previous papers [27,28], we introduced Cooperation as a Service (CaaS); a new service-oriented solution which enables improved and new services for the road users and an optimized use of the road network through vehicle's cooperation and vehicle-to-vehicle communications. The current paper is an extension of the first ones; it describes an improved version of CaaS and provides its full implementation details and simulation results. CaaS structures the network into clusters, and uses Content Based Routing (CBR) for intra-cluster communications and DTN (Delay–and disruption-Tolerant Network) routing for inter-cluster communications. To show the feasibility of our approach, we implemented and tested CaaS using Opnet modeler software package. Simulation results prove the correctness of our protocol and indicate that CaaS achieves higher performance as compared to an Epidemic approach.

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