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It does not seem easy to generate reliable routes in Vehicular Ad-hoc Networks (VANETs) because of frequent link failures caused by vehicle's mobility. In this regard, we analyze the characteristics of topology-based routing protocols in order to assess the feasibility of each protocol for vehicular environments. We plan to design an efficient routing protocol for VANETs in order to generate reliable...
Vehicular ad hoc network (VANET) is suffering from the frequent link breakage and low packet delivery rate, which challenges routing protocols. To address this issue, we propose a Geographic Opportunistic Routing protocol based on Link state and Forwarding quality inside nodes (LF-GOR). We first put forward a hybrid approach of filtering and prioritizing to determine a candidate nodes set of the sending...
Vehicular Ad Hoc Network (VANET) is a subgroup of mobile ad hoc network (MANET). It is an emerging new technology to exchange information between vehicles to vehicles. VANETs are considered as one of the most noticeable technologies for improving the efficiency and safety of transportation systems. VANET mainly used to exchange traffic information between the vehicles and prevent accident. In VANETs...
In vehicular communications, the current standards can be applied for safety-related message exchange but in the future world, other new applications like autonomous controlled vehicles require more reliability and capacity with small delay. Moreover, the harsh communication environment is one of the most difficult challenges. The line-of-sight (LOS) component of the signal in inter-vehicle connectivity...
Vehicular Ad Hoc Network (VANET) is a subclass of Mobile Ad Hoc Network (MANET). QoS routing protocols are fundamental part of VANETs that aim to provide services with guaranteed quality. Existing routing protocols of MANET can be applied to VANETs as well but they do not perform well under the dynamic conditions of VANETs such as, fast moving nodes and frequent disconnections in the network. In this...
Vehicular Ad Hoc Network (VANET) is an emerging class of wireless network that operates in a vehicular environment to provide communication between vehicles. VANET can be used by wide variety of applications to improve road safety, traffic efficiency and driving comfort. With the high dynamic nature of this network, communication linkage among vehicles in the environment suffers from link-breakage...
Named Data Networking (NDN) is a data-centric architecture designed for the future Internet. Existing works show that NDN brings significant performance improvement for typical content-centric applications, and can also fit the mobile environment well. However, directly applying NDN to Vehicular Ad hoc NETworks (VANETs) is confronted with great challenges due to the high mobility of vehicles. Most...
In this paper, we propose an efficient multi-hop broadcast routing algorithm based on Real-time Traffic Estimation in vehicular ad-hoc networks (VANETs) including a novel relay node selection scheme and an efficient adaptive rebroadcast wait delay strategy. Firstly, we take the overall traffic information into consideration to select the relay node, which is different with the traditional scheme only...
The message propagation with low delay becomes a fundamental challenge in VANET. The vehicle Ad hoc networks are a very appealing solution for many safety applications like assistance driver, warning about collision of vehicle, warning of distance between vehicles, cooperation during driving and control for cruise cooperation. To operate these application the vehicles are fitted with those equipments...
Vehicular Ad hoc Network (VANET) is a special kind of Mobile Ad hoc Network. VANETs are becoming a technology for connecting vehicle to computer networks. VANETs consist of dynamic nodes in the form of fast moving vehicles whose movements are restricted to road layouts and static nodes in the form of Road Side Units (RSU). Frequent communication disconnections between vehicles are happening due to...
Reliable, secure, private and fast communication in vehicular networks (VNets) is extremely challenging due to the highly mobile nature of these networks. Contact time between vehicles is very limited and topology is constantly changing. Trusted communication in VNets is of crucial importance because without trust, all efforts for minimizing the delay or maximizing the reliability could be voided...
Vehicular ad hoc networks are a subclass of wireless networks in which vehicles on the road act as nodes, exchanging traffic and road safety information. The traditional MANET specific routing protocols is not as effective in VANET environment. The occurrence of link breakage is very frequent in VANET when compared to MANET due to the swift movement of the vehicles. Hence, this highly dynamic behaviour...
Direct radio-based vehicle-to-vehicle (V2V) communication can be used to prevent accidents and to provide accurate information on road state or surrounding vehicles intention. Both kinds of information can be used to enable drivers to react in time and avoid hazardous situations. While the IEEE 802.11p standard has specifically been adopted for vehicular communications, its Distributed Coordination...
This paper introduces the vehicle routing problem of the vaccine delivery with vehicle breakdowns. In the delivery process of vaccines, a continuous low-temperature environment is required. Once any event that causes the temperature to rise happens during the whole process, the quality of vaccines cannot be assured, and even human lives that are injected by the vaccines are threatened. Therefore,...
Current geocasting algorithms for VANETs are being designed to enable either private or reliable communications, but not both. Existing algorithms preserve privacy by minimizing the information used for routing, and sacrifice message delivery success. On the other hand, reliable protocols often store node information that can be used to compromise a vehicle's privacy. We propose a secure, privacy-preserving...
This paper proposes a new hybrid algorithm for solving the Arc Routing Problem with Stochastic Demands (ARPSD). Our approach combines Monte Carlo simulation (MCS) with the RandSHARP algorithm, which is designed for solving the Capacitated Arc Routing Problem (CARP) with deterministic demands. The RandSHARP algorithm makes use of a CARP-adapted version of the Clarke and Wright Savings heuristic, which...
In Vehicular Ad Hoc Networks (VANET), trust establishment among vehicles is important to secure applications' integrity and reliability. In general, trust levels can be evaluated by monitoring the behavior of neighboring nodes and their generated messages based on events. However, obstacles can create a case of None Line of Sight (NLOS), which will interrupt direct communication among vehicles and...
In this paper, we propose a reliable routing scheme based on vehicle moving similarity (RR-VMS), which focuses on stable rebroadcast nodes selection and route discovery to make inter-vehicle data transmissions more reliable. We select nearby vehicles having similar velocities with the source vehicle as rebroadcast nodes. We call these vehicles having moving similarity with the source vehicle. To reflect...
Cooperative vehicular systems require the design of reliable and efficient multi-hop networking protocols to achieve their foreseen benefits. Although many geo-routing protocols have been proposed in the literature, few contributions have analysed the benefits that road side infrastructure units could provide to successfully route data from source to destination. In this context, this paper proposes...
Heuristic Mobility-Aware OLSR Protocol was designed for VANETs in which nodes rapidly changed in speed and direction. This protocol will be collecting information of adjacent nodes and interpreting as a routing cost. The sum of the routing cost of all nodes along a candidate route is to be a routing metric. The route with the minimum cost index is selected based on the key that the lower the routing...
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