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This project aims to improve the throughput, energy consumption and overhead of vehicular ad hoc network (VANET) by optimising the network coding (NC) using Genetic Algorithm (GA). VANET shows a promising technology as it could enhance the traffic efficiency and promote traffic safety on the road systems. The conventional store-and-forward transmission protocol used in the intermediate node(s) simply...
This paper proposes a reliable MAC protocol for a fully distributed Vehicular Ad-Hoc Network (VANET) using the slot states sharing scheme. Recently, technology for reliably transmitting safety messages in VANET has become an issue. With VANET (operating on the IEEE 802.11p standard), as the number of vehicles increases on the highway, the network traffic also increases. It causes more frequent packet...
Vehicular ad hoc network (VANET) is a particular class of mobile ad hoc network (MANET) that utilizes moving cars as nodes to establish wireless communications and exchange information between them without the need of infrastructure. VANET is a promising technology used to provide safety, efficiency, and comfort to the road users. Routing protocol has become one of the most challenging tasks for VANET...
Vehicular Ad-hoc Networks (VANETs) experience diverse network environments ranging from infrastructure based with dense connected vehicle communication in urban highways to infrastructurless with sparse connected vehicle communication in rural highways. Routing protocols in such challenging environments should be adaptive to work with or without a fixed infrastructure under a quickly varying connected...
Vehicles to Pedestrians (V2P) communication always plays a critical role in Intelligent Transportation System (ITS). Recent researches show that Wi-Fi module in smartphones could be used to improve the traffic safety by broadcasting pedestrian position data. However, these Wi-Fi-based schemes could not achieve two-way communication with low latency, which would seriously affect the user experience...
Safety and non-safety application services require a guarantee of network performance, mostly in terms of throughput and packet collision. The current radio propagation path loss models use mean additional attenuation sophisticated fading model and do not consider the obstacle caused due to obstacles of vehicles in LOS of transmitting and receiving vehicles. This affects the attenuation signal at...
Vehicular Ad-hoc NETworks (VANETs) are composed of moving vehicles with the ability to process, store, and communicate via wireless medium. VANETs promise a wide scope of services, such as, safety and security, traffic efficiency, and others. For instance, a VANET application can detect, control and reduce traffic congestion based on data that describes traffic patterns. However, disseminating data...
Emergency situations require accurate and timely decisions in order to reduce delay and the additional impact of incidents on human lives and civil properties. However, decision-making in urban emergency situations is a challenging task due to the number of variables influencing the process and the unpredictable change of some of them. This process characteristic requires that decision-makers monitor...
Vehicle-to-vehicle channel characteristics differ significantly from those of conventional cellular channels, especially in terms of fading statistics due to varying environmental conditions, link types, vehicle types, and objects that result in complex propagation effects. Accurate modeling of the vehicular channel remains a complex challenge. In this paper, existing, common vehicular channel models...
It is necessary for Vehicular Ad-hoc Network (VANET) to preserve itself against misbehaving vehicles which are reporting wrong and invalid information. Generally, vehicles revocation checking is together with their private information leakage while users do not want their private information to be revealed. Therefore, an authentication and conditional privacy preserving scheme which is efficiently...
Vehicular Ad hoc Network (VANET) consists of group of moving vehicles acting as nodes, establishing its own dynamic topology for packets exchange. The vehicles or the nodes are usually travelling at high speeds, resulting into a frequently varying topology. In this paper, we present performance analysis of latest IEEE standard 802.11ac in comparison with previous MAC protocols like 802.11p and 802...
In wireless networks, trying to avoid interferences by using allocation and scheduling techniques is not an effective and permanent solution. In a high density network where nodes can have a large communication range, the channel capacity can be insufficient to support all broadcast messages even if they are perfectly scheduled. This is the case of the control channel (CCH) in the IEEE 1609.4 standard...
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 communication among connected vehicles in vehicular ad hoc network must be protected from unauthorized message injection and message alteration bymisbehaving vehicles. The proposed scheme allows only the connected authentic vehicles to disseminate message. It identifies the replay attackers, fake nodes and also the attackers that are disseminating false message as misbehaving vehicles. A certificate...
In recent years, the IEEE 802.11p and WAVE 1609.4 protocols were recommended for use in VANET (Vehicular Ad hoc Network). And an algorithm called BEB (Binary Exponential Backoff) was adopted as the default backoff algorithms in IEEE 802.11p protocol. A large number of studies have shown that backoff algorithms have many different impacts on the performance of VANET networks, such as packet delivery...
VANETs are playing an increasing role in the development of communication and traffic assistance in transportation. Therefore mobility simulations are needed to predict the impact of new ideas on the VANET. But the interest in adding new applications to vehicles may differ largely according to the traffic scenarios. It seems too complicated to have one integrated mobility simulator that deals with...
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...
Efficient traffic control system now a day's getting importance from different perspectives like number of the vehicle density, time management and less proportionate road lane increase. Different factors engross under various researchers, industries, improving the road transportation system. Major obstacle for vehicle on the road is the junction and traffic clearance at mixed scenarios at the junctions...
Inter-vehicle communication (IVC) is a key component enabling the autonomous driving vehicles. Standardization of IVC is advanced but yet improvements are still introduced. Congestion control is one of the sensitive topics. The IVC European standard ITS-G5 addresses the congestion issue enabled by a geo-networking protocol that exploits at networking level the geographic information. Implementation...
Caching mechanism is usually used in Content-Centric Networking. Cache data is contained at provider node and all nodes along the path to the consumer node. The disadvantage of this mechanism is the data redundancy on several nodes. In the case of the cache size is limited, the cache hit of the request data is issued. In this paper proposed a Cache Replacement with Content Popularity (CRCP) mechanism...
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