Allocating Roadside Units in VANETs Using a Variable Neighborhood Search Strategy

Sarubbi, Joao F. M.; Silva, Tais R.; Martins, Flávio Vinícius Cruzeiro; Wanner, Elizabeth F.; Silva, Cristiano M.

doi:10.1109/vtcspring.2017.8108447

Cited by 7 publications

(6 citation statements)

References 17 publications

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“…When the vehicular density increases, IEEE 802.11p performance rapidly deteriorates due to packet collisions. Another limit to the diffusion of IEEE 802.11p is also the need of road side units (RSUs) development along the roads, but this is out of the scope of the present work [48].…”

Section: Challenges and Limits Of Current Technologiesmentioning

confidence: 99%

The Use of Meta-Surfaces in Vehicular Networks

Masini

Silva

Balador

2020

JSAN

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Mobility as a service is becoming a new paradigm in the direction of travel planning on the basis of the best service offered by the travelled roads. Hence, the environment in which people move will become smarter and more and more connected to grant services along the whole path. This opens new challenges related not only to the on board connectivity and wireless access technologies, but also on the reliability and efficiency of the surrounding environment. In this context, reconfigurable meta-surfaces play a crucial role, since they can be used to coat buildings, vehicles or any other suitable surfaces and let the environment become an active part of the communication system by opportunistically redirecting (i.e., reflecting, without generating new waves) signals to the target receivers. The objective of this paper is to highlight the limits of current wireless access technologies for vehicular scenarios and to discuss the potential impact of a smart environment made of reconfigurable meta-surfaces on some next generation vehicular use cases, such as cooperative driving and vulnerable road users (VRUs) detection. In addition, a preliminary model is presented to derive, in a simplified way, the performance of an IEEE 802.11p network in terms of collision probability. Even if analytical and based on simplified assumptions, this model has been validated through simulations and allows to compare the performance of the network with and without reconfigurable meta-surfaces.

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Section: Challenges and Limits Of Current Technologiesmentioning

confidence: 99%

The Use of Meta-Surfaces in Vehicular Networks

Masini

Silva

Balador

2020

JSAN

Self Cite

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“…In general, after receiving a package via IEEE 802.11p, the OBU can transfer it through Wi-Fi to the tablets and smartphones. With all this information obtained via Wi-Fi, thanks to the vehicular ad-hoc network (VANET) [39][40][41][42][43][44] application, it is possible to help the driver in monitoring vehicle status and threats from surrounding vehicles [45]. When the tablet estimates an incoming collision, it will inform the driver with a warning on the screen and a voice alert.…”

Section: Vehicle Safety Applicationmentioning

confidence: 99%

V2X Communications Applied to Safety of Pedestrians and Vehicles

Arena

Pau

Severino

2019

JSAN

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Connected cars and vehicle-to-everything (V2X) communication scenarios are attracting more researchers. There will be numerous possibilities offered by V2X in the future. For instance, in the case of vehicles that move in a column, they could react to the braking of those in front of it through the rapid information exchanges, and most chain collisions could be avoided. V2X will be desiderated for routes optimizations, travel time reductions, and accident rate decrease in cases such as communication with infrastructures, traffic information exchanges, functioning of traffic lights, possible situations of danger, and the presence of construction sites or traffic jams. Furthermore, there could be massive conversations between smartphones and vehicles performing real-time dialogues. It is relatively reasonable to expect a connection system in which a pedestrian can report its position to all surrounding vehicles. Regarding this, it is compelling to perceive the positive effects of the driver being aware of the presence of pedestrians when vehicles are moving on the roads. This paper introduces the concepts for the development of a solution based on V2X communications aimed at vehicle and pedestrian safety. A potential system architecture for the development of a real system, concerning the safety of vehicles and pedestrians, is suggested to draft some guidelines that could be followed in new applications.

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“…The process of identifying the possible regions of RSUs deployment is determined to be highly challenging due to the hindrance introduced by the tall buildings, tall trees, constructions, and water bodies 9 . The regions considered for deploying RSUs may not exist in the rectangle or square geometric shape 10 . Moreover, the regions considered for RSUs deployment may be complex and have the possibility of introducing potential challenges that incur high communication delay in the process of V2I communication 11 .…”

Section: Introductionmentioning

confidence: 99%

Chew's first Delaunay triangulation refinement scheme‐based positioning of road side units for optimal network coverage in vehicular ad‐hoc networks

Selvakumari¹,

Lakshmi²,

Sheela

et al. 2022

Int J Communication

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Summary The temporal network fragmentation and uncertain vehicle mobility are considered to impact the communication connectivity among the vehicular nodes of the network. In this context, road side units (RSUs) play an anchor role in enhancing the vehicle‐to‐vehicle (V2V) communication connectivity and support vehicle‐to‐infrastructure (V2I) communication. In the current scenario, deploying a huge number of RSUs in the vehicular networks at an initial stage is completely impossible as it incurs high installation cost and authority restriction. Moreover, the optimal placement of RSUs in the vehicular network needs to be enforced for attaining maximized network coverage. In this paper, Chew's first Delaunay triangulation refinement scheme (CFDTRS) is proposed for optimal positioning of RSUs in order to attain optimal network coverage in the vehicular network with minimized cost. This CFDTRS considered the factors of vehicular density, number of obstacles in the map, intersection popularity, and global coverage into account during the placement of RSUs. It is proposed with the objective of deploying required number of RSUs within the range of data transmission in order to achieve maximal coverage in the convex map, such that each area of the convex map is completely covered with at least a single RSU in the existence of multiple number of obstacles. The simulation results of the proposed CFDTRS attained from the real time situations of simplex, moderate, and complex maps confirmed improved packet delivery rate of 9.32%, throughput by 10.74% with minimized packet loss of 9.14%, and reduced end‐to‐end delay of 19.31$, compared to the benchmarked schemes considered for investigation.

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Allocating Roadside Units in VANETs Using a Variable Neighborhood Search Strategy

Cited by 7 publications

References 17 publications

The Use of Meta-Surfaces in Vehicular Networks

The Use of Meta-Surfaces in Vehicular Networks

V2X Communications Applied to Safety of Pedestrians and Vehicles

Chew's first Delaunay triangulation refinement scheme‐based positioning of road side units for optimal network coverage in vehicular ad‐hoc networks

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