Filters








229 Hits in 4.8 sec

An Analysis of LOS Coverage in Vehicular Networks with Roadside Units and Relays [article]

Chang-Sik Choi, François Baccelli
2021 arXiv   pre-print
This paper analyzes the use of vehicular relays as a means to extend the Line-of-Sight (LOS) coverage from roadside units(RSUs) toward users on the streets in mmWave or visible light communications.  ...  As a result, the LOS coverage of those RSUs is extended by the LOS coverage newly provided by the vehicular relays.  ...  In this paper, we use stochastic geometry and random sets to analyze the size of the LOS coverage region in vehicular networks with vehicular relays.  ... 
arXiv:2110.13436v1 fatcat:m6it33iryjcvtcnrbfxwokpihi

Mitigating the Impact of Blockages in Millimeter-Wave Vehicular Networks through Vehicular Relays

Caglar Tunc, Shivendra S. Panwar
2021 IEEE Open Journal of Intelligent Transportation Systems  
with roadside units or a combination of a vehicle-to-vehicle (V2V) sidelink and a V2I link.  ...  We present an analytical framework to evaluate the performance of vehicular relaying, where vehicles on a highway exchange data with the network, either over direct vehicle-to-infrastructure (V2I) links  ...  Our main goal is to provide an analytical framework that will enable fast and accurate analysis of a vehicular relay network, without the need to run long and extensive simulation.  ... 
doi:10.1109/ojits.2021.3100856 fatcat:hko3pae7ozd3zk6nvikftia3ci

Parked Cars are Excellent Roadside Units [article]

Andre B. Reis, Susana Sargento, Ozan K. Tonguz
2016 arXiv   pre-print
(OBUs) and as Roadside Units (RSUs).  ...  This self-organizing network approach enables parked cars to create coverage maps based on received signal strength and make important decisions, such as if and when a parked car should serve as an RSU  ...  present, parked cars in the vicinity of an RSU can act as relays afterwards with an analysis of the self-organization process to it (see Figure 1b), extending the reach of the fixed unit  ... 
arXiv:1606.00169v1 fatcat:kmzfbirhhzh53boh76g77s4hwa

Guest Editorial Vehicular Communications and Networks—Part I

Cheng-xiang Wang, Athanasios Vasilakos, Ross Murch, Gordon Stuber, Xuemin Shen, Wai Chen, Timo Kosch
2011 IEEE Journal on Selected Areas in Communications  
design of wireless networks, and beyond 4G wireless communications.  ...  His current research interests include wireless channel modelling and simulation, cognitive radio networks, vehicular communication networks, green communications, cooperative MIMO communications, crosslayer  ...  In the paper "Analysis of Access and Connectivity Probabilities in Vehicular Relay Networks", Ng, Zhang, Zhang, Yang, and Mao develop an analytical model to fully characterize the access and connectivity  ... 
doi:10.1109/jsac.2011.110101 fatcat:ua3xi5s7ireyvnk4ilkzicniuq

Enhancement of VANET Communication Range using WiMAX and Wi-Fi: A Survey

Priyanka Tiwari, Rajendra Singh Kushwah
2013 International Journal of Urban Design for Ubiquitous Computing  
In recent years, VANET (Vehicular Ad-hoc Network) have become an orientation to the researchers enhancing the comfort and facilities to the driver and passengers both.  ...  Relays at the roadside can be deployed to enhance the robustness and coverage of communication [8] . Vehicle to infrastructure (Roadside) communication (V2V OR V2R): V2R communication is shown in  ...  Road side units (RSUs) are the access points used together with the vehicles to allow information dissemination on the roads. In this vehicular environment Wi-Fi and WiMAX are used as RSUs.  ... 
doi:10.21742/ijuduc.2013.1.1.02 fatcat:ibpv7tbtyjf5dlrpjxrdxip3dm

Intelligent Reflecting Surface in 6G Vehicular Communications: A Survey

Yishi Zhu, Bomin Mao, Nei Kato
2022 IEEE Open Journal of Vehicular Technology  
In this paper, we give a comprehensive survey of current research works on different IRS applications in ground-based vehicular communications and aerial vehicular communications after discussing its basic  ...  Due to its easy deployment and low expense, it has been widely recognized as a promising technology for ground and aerial vehicular networks to enhance signal strength, physical layer security, and positioning  ...  The ground-based vehicular network and the aerial vehicular network are in an emergency to be upgraded.  ... 
doi:10.1109/ojvt.2022.3177253 fatcat:qipwy4zm3fgejgercwiv7jlica

Analysis of Access and Connectivity Probabilities in Vehicular Relay Networks

Seh Chun Ng, Wuxiong Zhang, Yu Zhang, Yang Yang, Guoqiang Mao
2011 IEEE Journal on Selected Areas in Communications  
In this paper, we develop an analytical model with a generic radio channel model to fully characterize the access probability and connectivity probability performance in a vehicular relay network considering  ...  On the other hand, connectivity probability, i.e. the probability that all the vehicles are connected to the infrastructure, indicates the service coverage performance of a vehicular relay network.  ...  satisfaction analysis) and the connectivity probability (for service coverage analysis) for infrastructure-based vehicular relay networks, wherein both one-hop (direct access) and two-hop (via a relay  ... 
doi:10.1109/jsac.2011.110114 fatcat:4k2kc3i23rfxfm4yqdphp3cupu

The Dynamics of Vehicular Networks in Urban Environments [article]

Nicholas Loulloudes, George Pallis, Marios D. Dikaiakos
2011 arXiv   pre-print
Given that a number of RSUs have to be deployed for disseminating information to vehicles in an urban area, we also study their impact on vehicular connectivity.  ...  Vehicular Ad hoc NETworks (VANETs) have emerged as a platform to support intelligent inter-vehicle communication and improve traffic safety and performance.  ...  In addition, we study the impact of roadside units in the networking shape of VANET graphs.  ... 
arXiv:1007.4106v2 fatcat:hxyilaod7zehbg2ufk3gygh2q4

Performance Analysis of ITS V2V Broadcast Communication Using CSMA/CA and a Roadside Relay Station at Intersections

Huiting Cheng, Yasushi Yamao
2013 Journal of Information Processing  
However, the potential of such a network has not been well analyzed and optimized. In this paper, a theoretical model is proposed to analyze the performance of the broadcast relay network in detail.  ...  In order to improve the communication reliability, a CSMA/CA based vehicle-roadside-vehicle broadcast relay network was proposed and its effectiveness has been shown through simulations.  ...  network in a vehicular environment.  ... 
doi:10.2197/ipsjjip.21.90 fatcat:5uupzvkkwrc4fplurzsaj3ajqy

A Multi-Hop Data Dissemination Algorithm for Vehicular Communication

Odilbek Urmonov, HyungWon Kim
2020 Computers  
In vehicular networks, efficient multi-hop message dissemination can be used for various purposes, such a informing the driver about the recent emergency event or propagating the local dynamic map of a  ...  Our simulation results demonstrated that the proposed method can achieve about 15% reduction in delays and 2 times the enhancement in propagation distance compared with the previous methods.  ...  As a result, it performs with increasing delay in a denser network scenario. Figure 11b shows a relay coverage.  ... 
doi:10.3390/computers9020025 fatcat:erdf75nlozh2lavid7abpsnbju

UAV-Assisted Hybrid Scheme for Urban Road Safety Based on VANETs

Sayed Jobaer, Yihong Zhang, Muhammad Ather Iqbal Hussain, Foysal Ahmed
2020 Electronics  
Road congestions have been a serious issue of all time since the nodes have high mobility and transmission range is limited, resulting in an interruption of communication.  ...  Vehicular ad hoc networks (VANETs) have become the core research technology for numerous application possibilities related to road safety.  ...  Compared with other mobile ad hoc networks, VANET is a network that can communicate wirelessly among the vehicles, and between the roadside units (RSUs) to vehicles [3] .  ... 
doi:10.3390/electronics9091499 fatcat:rrn5dqv72nh73bmb3lbvlo7tia

Table of Contents

2020 IEEE Transactions on Vehicular Technology  
Bhatia 16241 Analysis of Blocking in mmWave Cellular Systems: Characterization of the LOS and NLOS Intervals in Urban Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  ...  Okada 15668 Stability Region and Delay Analysis of a SWIPT-Based Two-Way Relay Network With Opportunistic Network Coding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  ... 
doi:10.1109/tvt.2020.3046596 fatcat:g4a72wfdwvgefa6bs4ijrzvqui

Space-air-ground integrated vehicular network for connected and automated vehicles: Challenges and solutions

Zhisheng Niu, Xuemin S. Shen, Qinyu Zhang, Yuliang Tang
2020 Intelligent and Converged Networks  
In this paper, we propose a novel Space-Air-Ground integrated vehicular network (SAGiven) architecture to gracefully integrate the multi-dimensional and multi-scale context-information and network resources  ...  Unlimited and seamless coverage as well as ultra-reliable and low-latency communications are vital for connected vehicles, in particular for new use cases like autonomous driving and vehicle platooning  ...  Acknowledgment This work was supported by the National Natural Science Foundation of China (No. 91638204).  ... 
doi:10.23919/icn.2020.0009 fatcat:5debdjnpgnbyvkyqpoeb3rl5bm

Efficient Placement of an Aerial Relay Drone for Throughput Maximization

Hazim Shakhatreh, Ali Alenezi, Ahmad Sawalmeh, Muhannad Almutiry, Waed Malkawi, Tran Manh Hoang
2021 Wireless Communications and Mobile Computing  
In this paper, a single UAV is used as an aerial relay node to provide connectivity to wireless devices because of the considerable distance between wireless devices and the ground base station.  ...  The problem of efficient placement of an aerial relay node is formulated as an optimization problem, where the objective is to maximize the total throughput of wireless devices.  ...  Acknowledgments The authors extend their appreciation to the Deputyship for Research and Innovation, Ministry of Education -Kingdom of Saudi Arabi for funding this research work through the project number  ... 
doi:10.1155/2021/5589605 fatcat:joighuheqvfixp3653omn3qzf4

VEHICLE TO EVERYTHING (V2X) COMMUNICATIONS TECHNOLOGY FOR SMART MOBILITY IN MALAYSIA: A COMPREHENSIVE REVIEW

Sumendra Yogarayan, Siti Fatimah Abdul Razak, Afizan Azman, Mohd. Fikri Azli Abdullah
2021 Journal of Southwest Jiaotong University  
The study also includes available V2X technology platforms and products. In addition, the challenges of deployments are also depicted in this study.  ...  (V2I), vehicle-to-pedestrian (V2P), and vehicle-to-network (V2N).  ...  ., & SALAH, M.B. (2020) An adaptive vehicular relay and gateway selection scheme for connecting VANETs to Internet via 4G LTE cellular network.  ... 
doi:10.35741/issn.0258-2724.56.4.47 fatcat:cxnv5se5pfdlda6mhwuqcm54ke
« Previous Showing results 1 — 15 out of 229 results