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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,...
Modern cities are blanketed with Wi-Fi Hotspots. Such network access points can be utilised by Internet of Thing devices to enable wireless sensor network data mining deployments to report to the cloud. Vehicles are such devices that can provide valuable data sensing platforms for both internal operational properties such as speed, fuel and engine heat as well as external environmental features including...
The combination of Device-to-Device (D2D) Communication in 5G Cellular Networks and vehicular networks will not only increase the performance of vehicular networks, but also increase the revenues for network operators and services providers. This paper proposes a 5G D2D routing method oriented to vehicular networks, which can increase the connectivity and scalability of vehicular networks while alleviating...
Although IEEE 802.11p technology is standardized for road safety and efficiency applications, the channel congestion problem is its key weakness necessitating distributed congestion control (DCC) algorithms on different layers of the communication stack. In this paper, we propose DCC-enabled Contention based Forwarding scheme targeting multi-hop dissemination of Decentralised Event Notification Messages...
Traditional vehicular routing protocols cannot accurately foresee future location of each vehicle for efficient packet forwarding. Recently, the data mining approach has been applied to analyze huge vehicle trajectory data. In this paper, we propose a novel trajectory-based routing (NTR) protocol to improve the packet replication efficiency of vehicles in the Vehicular Delay Tolerant Network (VDTN)...
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...
An effective transportation system is part of the core of a modern smart city to support various human activities. Recent developments of Connected Autonomous Vehicles (CAVs) have great impact on the automotive industry. Due to its numerous advantages, CAV is expected to get popular in the near future. While most studies focus on standalone CAV technologies, there is much potential on collective CAV...
The so-called Ring Road approach has been identified as interesting application area of DTN protocols. It leverages low-cost low-earth orbit satellites in order to inter-connect isolated networks with the Internet. Network coding may be used to introduce redundancy to address e.g. lossy links. In this paper, a simulator setup for network coding in Ring Road networks is presented and discussed. The...
An important goal in engineering design is to ensure that infrastructure systems are utilized efficiently by the public. One example is a transportation network which exhibits congestion effects due to self-interested routing choices by drivers. We study the use of road tolls to positively influence routing choices, focusing on deriving pricing mechanisms which are robust to mischaracterizations of...
Path planning is essential for all tour activities, including biking. In fact, path planning is a very classic and interesting topic that has attracted much attention due to the need for human movement. Depending on the nature of the problem, different solutions have been provided. Many of the solutions exhibit the characteristics of commutative properties; for example, the shortest path problem requires...
There are some shortcomings in the delay tolerant network (DTN) routing algorithm, such as low message delivery rate, low network efficiency and high cost in the satellite network. In order to solve the problem above, this paper proposes a limited copy algorithm MPWLC based on service probability. In MPWLC, not only is the number of copies limited, but the storage resources of the satellite are also...
An increase of vehicles in a city without an efficient infrastructure of traffic management can cause damages not only financial but also environmental and social. In order to support urban traffic system to relieve the traffic congestion and the damage caused by congestion of vehicles, in this paper, we propose a mechanism for Intelligent Transport Systems named FOg RoutE VEhiculaR (FOREVER), in...
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...
Routing messages over vehicular ad hoc networks (VANETs) is usually achieved through geographic routing protocols. In such networks, the vehicle dynamics causes rapid changes on the vehicle density and the communication links. In order to be efficient to route messages from a vehicle to another, we need to locate each node (its position), this is achieved by a location service. This study works on...
Software-defined networking (SDN) is expected to dramatically simplify network control process, enable the convenient deployment of sophisticated networking functions, and support user applications with guaranteed quality of service (QoS). To achieve data packet transmission between two switches in SDN, efficient routing algorithms should be applied. In this paper, we study joint routing selection...
In this paper we describe a bottom-up approach to integrate GIS maps (endorsed by discrete features, such as points, lines, polygons), in order to develop a route planner for wheelchair users. We integrate public available data with a novel model for route planning, based on sidewalks, crosswalks and curb ramps, as opposed to traditional street-based approaches. We show that our sidewalk-based model...
Packet routing is important for Vehicular Delay Tolerant Networks (VDTNs).Opportunistic routing algorithms based on historical records are insuciently accurate in forwarder selection due to movement randomness of vehicles. Trajectory-based routing algo- rithms tackle vehicle movement randomness but cannot be directly used in VDTNs due to the dependence on APs. In this paper, we develop a distributed...
Many broadcast protocols have been proposed in Vehicular ad-hoc Network (VANET) for safety applications and traffic efficiency. GeoBroadcast, which the sender sends information to the geographical area, has been standardized by the ETSI Technical Committee ITS. The routing protocol is a key technology satisfying communication requests of high reliability, low delay and universality for GeoBroadcast...
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...
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