We propose a dissemination system using multiple roadside units (RSUs) on a two-way roadway. To enhance the performance of data services, data items are disseminated through a hybrid of infrastructure-to-vehicle (I2V) and vehicle-to-vehicle (V2V) communications. Unserved requests in RSU’s coverage are transferred to the next RSU located in a vehicle’s trajectory. In this way, channels are utili...

In this paper, we address the problem of delivering multimedia content to a sparse vehicular network from roadside info-stations, using efficient vehicle-to-vehicle collaboration. Due to the highly dynamic nature of the underlying vehicular network topology, we depart from architectures requiring centralized coordination, reliable MAC scheduling, or global network state knowledge, and instead a...

Vehicular ad hoc networks (VANETs) have been the focus of considerable recent research, allowing vehicles to broadcast messages to other vehicles and inform drivers regarding immediate route changes that can improve driving efficiency or avoid accidents. Because vehicles communicate using wireless channels, malicious attacks may occur during the transmission of messages. To ensure security, the...

In urban scenario, the imbalanced spatial distribution of traffic flow exerts an important influence on the performance of communication between vehicles and the Roadside Unit (RSU). This paper presents a strategy for RSUs placement based on the road traffic characteristics, aiming at improving connectivity in vehicular ad hoc networks. To divide the coverage area of each RSU, we propose an Exp...

Recent advances in the integration of vehicular sensor network (VSN) technology, and crowd sensing leveraging pervasive sensors called onboard units (OBUs), like smartphones and radio frequency IDentifications to provide sensing services, have attracted increasing attention from both industry and academy. Nowadays, existing vehicular sensing applications lack good mechanisms to improve the maxi...

Smart driving has become conceivable due to the rapid growth of vehicular ad hoc networks. VANETs are considered as main platform for providing safety road information and instant vehicle communication. Nevertheless, open wireless nature communication channels, VANET is susceptible security attacks by malicious users. For this reason, secure anonymous authentication schemes essential in VANETs....

Both security and privacy are central issues need to be properly handled because communications shared among vehicles in open channel environments of 5G-enabled vehicular networks. Several researchers have proposed authentication schemes address these issues. Nevertheless, not only vulnerable quantum attacks but also use heavy operations generate verify signatures messages. Additionally, an exp...

Vehicle-to-everything communication system is a strong candidate for improving the driving experience and automotive safety by linking vehicles to wireless networks. To take advantage of full benefits vehicle connectivity, it essential ensure stable network connection between roadside unit (RSU) fast-moving vehicles. Based on extended Kalman filter (EKF), we develop tracking algorithm enable re...

The Energy Harvesting Roadside Unit (EH-RSU) with self-powered module will not only effectively reduce the communication load of regional Vehicular Ad Hoc Networks, but also enjoys a low deployment cost. Given imbalance in demands invoked by transportation systems, EH-RSU should allocate energy appropriately accordance its harvesting rate to ensure safety vehicles within coverage. Firstly, we p...

As vehicular networks become popular and many vehicles want to access data through a roadside unit. In this paper, there was a vehicle to roadside communication and we propose scheduling schemes for efficient delivery of data packets in vehicular adhoc network. On the basis of priority scheduling algorithm vehicles can download/upload the data from RSU. In this paper we can control the congesti...