The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The Optimized Link State Routing (OLSR) protocol, early designed for Mobile Ad hoc Networks (MANET), has been customized and evaluated for various Vehicular Ad hoc Network (VANET) scenarios. Most of the related work focus on changing OLSR parameters in order to adapt it to the high dynamicity of VANET due to high velocity of its nodes. However, they keep using OLSR with its native clustering scheme,...
In recent years, many routing protocols that take into account particular vehicular ad hoc network (VANET) characteristics such as higher vehicle speeds and mobility patterns have been proposed. Most of the existing VANET routing protocols largely neglect vehicles as obstacles in VANETs. Obstacle shadowing caused by large vehicles such as trucks or buses more negatively affects packet transmission...
Connectivity in vehicular networks is continuously changing due to high mobility of vehicles, causing rapid changes in the network topology. This has a direct negative impact on the throughput and packet transmission delay. Many algorithms and approaches have been proposed to address this problem. However, most of them are not practical due to their dependence on a centralized infrastructure, which...
Vehicular Ad Hoc Networks (VANET) have become one of the most important research areas for the successful and deployment of intelligent transportation system and the unmanned vehicle technologies. In VANET, Travel Prediction-based Data Forwarding (TPD) was proposed as one of novel data forwarding schemes based on road traffic statistics. However, the TPD could not guarantee good performance in the...
Vehicular Ad-Hoc NETworks (VANETs) have received considerable attention in recent years, due to its unique characteristics, which are different from Mobile Ad-Hoc NETworks (MANETs), such as rapid topology change, frequent link failure, and high vehicle mobility. The main drawback of VANETs network is the network instability, which yields to reduce the network efficiency. This paper proposes a novel...
The Local Rarest Bundle First (LRBF) and Local Rarest Generation First (LRGF), content distribution strategies for delayed-tolerance networks (DTNs), reach high delivery rate in the vehicular ad-hoc networks (VANETs), where intermittent connectivity due to permanent network fragmentation and node mobility are main challenges. However, in order to achieve a high delivery rate, both strategies require...
In order to verify the application effect of MANET Routing Protocol in vehicular ad hoc network, the table driven routing priors DSDV, OLSR and on-demand routing reactive AODV are used to verify the results. In this paper, the simulation platform is built by NS3 and SUMO, and the performance of MANET is verified by comparing the network performance parameters, such as throughput, packet delivery rate...
An improved GPSR protocol based on stratification of traffic density is designed to get lower possibility to encounter local optimum in VANET. In the sparse region, every node maintains a list that recorded its multi-hop neighbor nodes, but in the dense region, every node just maintains its one-hop-neighbor nodes. Every node will change their strategy according to the change of the periphery traffic...
The CORNER propagation model, first proposed in 2010, has been previously validated and found to be a reasonably accurate representation of propagation scenarios in urban Vehicular Ad Hoc Networks (VANETs). This paper considers the impact of the propagation environment on routing performance and reveals a pressing need to consider more accurate propagation models when designing urban VANET routing...
This paper proposes a Cluster-based On-demand DElay tolerant routing (CODE) algorithm for VANETs. The CODE algorithm considers a higyway scenario and performs route discovery for data dissemination based on a cluster-based routing structure. To build the routing structure, CODE first configures vehicles moving on the highway into clusters and uses the relative speeds of vehicles in cluster-head election...
The paper is investigating connectivity conditions and optimal selection of infrastructure access points location in V2I communications, employed on urban motorways. Radio communication channels usability, taking into account third party channel utilization, is also analyzed. A mathematical model taking with road capacity and radio interferences is proposed to evaluate optimal AP density in the field...
Vehicular communication systems have significant benefits. Their adoption and use in motor vehicles can help prevent road traffic accidents, increase route efficiency and fuel economy, and positively impact the user experience. As autonomous vehicles and inter-vehicular communication systems are becoming increasingly commonplace, the need for robust and secure wireless communication between vehicles...
Mobility is a major problem in urban centers and vehicular networks have been a focus of study in the attempt to create applications focused on intelligent transport systems (ITS). With that in mind, ITS initiatives act as a possible solution to improve the functioning and performance of traffic systems, reducing congestion and increasing security for citizens. In this way, the present work presents...
In vehicular ad hoc networks (VANETs), due to highly mobile and frequently changing topology, available resources and transmission opportunities are restricted. Transmitting frames efficiently within transmission opportunities is very important for system performance. Generally, there are many transmissions between many senders and receivers in a congested environment, which leads to network congestion...
One main characteristic of Vehicular Ad Hoc Networks (VANETs) is the intermittent connectivity, which leads to failures of end to end paths between end nodes. Named Data Networking (NDN) is a network paradigm that deals with such problems, since information is forwarded based on content and not on the location of the hosts. Hence, NDN has been proposed in VANET scenarios. In this paper, we propose...
In vehicular ad hoc networks (VANETs), due to highly mobile and frequently changing topology, available resources and transmission opportunities are restricted. Transmitting frames efficiently within transmission opportunities is very important for system performance. Generally, there are many transmissions between many senders and receivers in a congested environment, which leads to network congestion...
In a vehicular ad hoc network (VANET), vehicles attempt to improve safety by emitting safety messages that others receive to increase their awareness of one another. Yet, the conflicting data delivery requirements of safety applications can potentially jeopardize safety itself. While many information dissemination techniques have been proposed to improve data delivery in a VANET, such as flooding...
Whether the routing protocol for Vehicular Ad Hoc Networks can real-time perceive the connectivity change of the road or not is one of the key factors to evaluate its routing performance. Aiming at the limits of the current research on routing protocols for Vehicular Ad Hoc Networks, a novel routing protocol is presented in this paper, which considered the influence caused by both vehicle density...
Vehicular systems that intend to aid the driver to increase road safety and reduce road accidents might differ in the levels of safety provided if they are based on different functioning and visualization concepts. In this paper we present a flexible and adjustable 3-dimensional driving simulator based on Open-StreetMap (OSM) data that integrates Vehicular Ad Hoc Network (VANET) communication capabilities...
Vehicle mobile ad-hoc networks (VANETs) are becoming the mainstream of network research in these days. Researches have been carried out from many aspects. However, due to the limitation of the characteristics of VANETs, the implementation in real-world still requires much effort to overcome the shortcomings to guarantee a reliable link and efficient data delivery. In the paper, we present an improved...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.