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Vehicular ad hoc networks (VANET) have attracted considerable attentions in recent times for promising applications like vehicular safety, traffic monitoring, etc. Due to fast topological change and frequent network disruption, multihop data dissemination is an important issue. In this paper, we propose a greedy intersection-based optimal routing protocol, in which we formulate the data forwarding...
Vehicular ad hoc network performs crucial function in road safety, detection of traffic accidents and reduction of traffic congestions by disseminating messages among vehicles. The periodic broadcasting is an efficient approach to serve the requests of many vehicles without selecting any route between source and destination. But it degrades the network performance due to hidden node problem and broadcasting...
Intended for providing the security in the VANETS (Vehicular Ad hoc Network) scenario, the covert storage channel has been implemented through which data transmitted between the sender and the receiver. Covert channels are the logical link which be used for the communication purpose and hide the secure data from the intruders. This paper refers to the Establishment of bit selective mode covert storage...
As researchers got interested in the vehicular ad hoc networks (VANET), several approaches and uses have been given. One of the most interesting is the network congestion control in an ad hoc environment. Our work consists of introducing a new approach in congestion control of Vehicular Ad Hoc Networks (VANET), using a new model. Our model is based on the hop by hop congestion control methods. This...
Mobile gateways are deployed to improve Internet services in Vehicular Ad-hoc Network (V aNet). In this vein, this paper argues the need for selecting an appropriate gateway for vehicles without access to the Internet according to certain criteria and based on a gateway discovery system. The proposed solution introduces a method of multiple-criteria decision analysis helping to find suitable gateways...
The VANET (Vehicular Ad hoc Network) is a collection of mobile nodes forming a temporary network on variable topology, operating without a base station and without a centralized administration. The characteristics of VANET network that distinguishes it from other ad hoc networks, such as high mobility and communication with the infrastructure to support security or comfort applications, have prompted...
The vehicular networks represent an innovative and a promising research area. They contribute in the realization of ITS (intelligent transportation systems) to improve road safety and to provide various services and applications for both drivers and passengers. Several applications require knowledge of vehicle's positions such as target tracking. In a previous work, an approach for tracking exploiting...
In recent years, the immense and ubiquitous coverage area of vehicular network is growing very frequently as the computational power and deployment of modern vehicle's wireless connectivity and their service facilities are raised. VANET (Vehicular Ad hoc Network) have become an orientation to the researchers and users both for inventive utilization of wide range of safety and non-safety applications...
In this paper, we present a comprehensive study on the performance and behavior of AODV and DSDV routing protocols by using two standards which is the conventional DSRC and the latest Wi-Fi Direct. DSRC is a well-known technology being considered as the most promising wireless standard in VANET. On the contrary, as the latest wireless networking standard, the potential of Wi-Fi Direct technology should...
Video is the most recommended media for information dissemination in VANETs (Vehicular Adhoc Networks) as it gives clear and quick understanding of information to the drivers. The real time and on-demand video helps vehicles on road in various possible ways. An improper provider not only leads to frequent interruptions of communications, but the transmission of the invalid video fragments would also...
In vehicular ad hoc networks (VANETs) the network services and applications (e.g., safety messages, vehicle navigation data) require an exchange of vehicle and event location information. VANET is an important research field of wireless sensor networks providing different applications such as real time traffic information for on road vehicles and related authorities. The integrated model of VANET...
Vehicular Ad-hoc networks (VANETs) are an emerging class of wireless networks for data exchange between vehicles or between vehicles and infrastructure. They attract interest both from the point of view of the automobile industry as operators of networks and services, in order to provide new technologies that improve the safety and efficiency of road transport. Following this vision, we seek in this...
Geocast routing in vehicular ad-hoc networks has become an area of interest for researchers as it is an essential part of ITS (intelligent transport system). Many vehicular applications require geocast i.e. fast and reliable warning message dissemination to particular regions. Several proposed approaches, consider a geocast region as a circular area with a center point and a radius. However, in case...
This work aims to provide a review of the routing protocols in the Internet of Vehicles (IoV) from routing algorithms to their evaluation approaches. We provide five different taxonomies of routing protocols. First, we classify them based on their transmission strategy into three categories: unicast, geocast, and broadcast ones. Second, we classify them into four categories based on information required...
This paper considers energy efficiency of roadside units (RSUs) in sparse vehicular networks and proposes a simple but effective on/off scheduling mechanism for reducing power consumption of an RSU. With the proposed on/off scheduling mechanism, if there is no request received from vehicles, an RSU works alternately between ON and OFF in a periodic manner. If a request is received from a vehicle during...
In this paper, we introduce a new strategy of using VANET nodes with visual sensors and wireless transceivers to build an instant camera barrier for a given mission period. Given a set of properly equipped VANET nodes whose drivers voluntarily join the protocol by exposing their future travel plans and use onboard equipment to transmit realtime video to the authority, we aim to maintain the barrier...
We are proposing a layered and scalable WAVE (Wireless Access for Vehicular Environments) security structure for VANET (Vehicular Ad hoc Network) network. The scalability and variable message delivery are provided by using both asymmetric and symmetric encryption algorithm. The whole region is divided into different security domains and the security related load of each domain is distributed evenly...
Due to the dire consequences of privacy abuse in vehicular ad hoc network (VANET), a number of mechanisms have been put forth to conditionally preserve the user and location privacy. To date, multiple pseudonymous approach is regarded as one of the best effective solutions where every node uses multiple temporary pseudonyms. However, recently it has been found out that even multiple pseudonyms could...
The highly anticipated era of Internet of Things (IoTs) expected to empower all aspects of Intelligent Transportation Systems (ITS) will undeniably improve transport safety and significantly reduce road accidents. To promote the communication of mobile vehicles (or IoVs), US FCC officially allocated a merger 75 MHz spectrum in the 5.9 GHz band to enable vehicular communication. In this paper, we studied...
In vehicular networks many applications and services require the use of vehicle position, which is typically obtained from off-the-shelf Global Positioning Systems (GPS). However, GPS' position accuracy is low and the GPS receiver relies on line-of-sight signalling from the satellites. For the sake of application consistency, when the GPS position is not received due to signalling failures, vehicular...
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