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This paper is faced with group sensing problem, where HD map producers motivate private cars to collect data from real world. Group sensing needs vehicles to communicate physically, and drivers to collaborate strategically. First we consider communication module, three VANET-based methods are proposed to achieve inter-vehicle message relaying. Secondly, we consider collaboration module which motivates...
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...
Vehicular Ad hoc Networks (VANETs) are an important component of the advanced information networking for inter-operable communications with a wide range of networks. In our previous work, we proposed a method of Enhanced Message Suppression Controller (EMSC) considering delayed ack for vehicular Delay/Disruption Tolerant Networking (DTN). In this paper, we evaluate the performance of our proposed...
Vehicular ad-hoc networks (VANET) have gained importance in recent years due to urbanization and technical advancements. Vehicle to vehicle (V to V) and Vehicle to infrastructure (V to I) are important types of VANET which have been exploited to their optimum use for the comfort and safety of the people on roads and off roads. With the several other features of VANET which are already being implemented...
The IEEE 802.11p standard drafted to support wireless access in vehicular environments (WAVE) or vehicular ad hoc network (VANET) which uses Enhanced Distributed Channel Access (EDCA) mechanism for the contention-based prioritized Quality of Service (QoS) at the MAC layer. The EDCA mechanism defines four access categories (ACs). Each AC queue works as an independent DCF station (STA) with Enhanced...
Intelligent Transportation Systems (ITS) constitute a stimulating research subject for the global research community, as it is arguably considered to play a dominant role in the development of efficient, secure and safe transportation systems. ITS enable rapidly emerging information technologies and novel mobile applications and services in vehicles and transportation infrastructures. The development...
Security mechanisms recommended by VANET standardization bodies are not sufficient to stop authorized vehicles from sending bogus or fake messages that in the worst cases could put people's life at risk. There are efforts in evaluating the behaviour of the vehicles in VANETs, based on reputation mechanisms. However, the most of them compromise the privacy, the messages are linkable and no anonymous...
In the near future, beacon dissemination base stations will be deployed in shopping mall, supermarkets, stadiums, museums, and theatres to send advertisements offering services and products to the customers with mobile devices. Today, an example of this concept of business model is the Apple's iBeacon. Borrowing this concept from mobile computing, we envision a new opportunity for business modeling...
Many routing algorithms for vehicular ad-hoc networks have relied on geographic forwarding as a means to reduce the paths' sensitivity to individual vehicle movements. In recent years, the basic forwarding strategies have been refined to create road-based paths, connecting successive road intersections selected on the basis of the connectivity between them. Revisiting this idea, we present two different...
In Vehicular Ad Hoc Networks (VANETs), efficient use of the control channel affects both safety applications that use the control channel and other applications that use the service channels. Its efficiency deteriorates due the collisions on accessing to the control channel or due to the merging collisions which happen when fast moving vehicles use the same allocated channels. In this paper, we propose...
Vehicular ad-hoc networks (VANETs) have gained a lot of attention from both academic and industry due to its immense potential in revolutionizing the vehicular communication industry. VANETs facilitate vehicles to share safety and non-safety information through messages. Safety information includes road accidents, natural hazards, road blocks etc. Non-safety information includes tolling information,...
In large-scale vehicular ad hoc networks, in order to speed up the anonymous message authentication and realize scalability, the forwarding node combined signatures and with the help of the Road Side Units (RSU) for quick authentication and dissemination method still some key questions: when the vehicle sends a message to RSU authentication and dissemination, the forwarding nodes using combined signature...
Platooning is an important mechanism to increase the capacity of roads and the efficiency of driving. Vehicular ad hoc networks (VANETs) can enhance the performance of platoons. In this paper, a novel mechanism that selects a leader vehicle autonomously for a platoon based on relative mobility information of vehicles is proposed for overcoming the restriction on vehicles and for facilitating platoons...
In this study, we propose a variation of the RAdNet for vehicular environments (RAdNet-VE). The proposed scheme extends the message header, mechanism for registering interest, and message forwarding mechanism of RAdNet. Based on results obtained from simulation experiments, we compare the performance of RAdNet-VE against that of RAdNet, a basic content-centric network (CCN) using reactive data routing,...
In this paper, we describe an VM2M overlay architecture where the overlay acts as the control channel (CCH) of VANET to transfer safety messages between vehicles and RSU. The VM2M overlay network is implemented over dedicated preamble codes in the physical layer and the medium access control (MAC) layer modeled as the IEEE 802.15.4 carrier sense multiple access (CSMA/CA) mechanism. In this paper,...
Multi-hop broadcast communication is one of the main communication mechanisms to propagate safety and non-safety messages through vehicles in Vehicular Ad hoc Networks (VANETs). In our previous work, we proposed two broadcast schemes, fuzzy logic-based broadcast (FLB) and bandwidth-efficient fuzzy logic-assisted broadcast (BEFLAB). FLB offers high level of reachability where BEFLAB is more bandwidth...
In vehicular ad-hoc network (VANET), safety applications require the dissemination of safety information and vehicular states to all nearby vehicles through broadcasting. However, due to the tremendous information, broadcast channel will be confronted with great pressure. Therefore, vehicles should adjust their contention window to avoid intense competition on channel. In this paper, we propose a...
The paper presents a solution for reducing road traffic emissions and particulate matter from non-electric (classic) vehicles in cities by sharing cooperative driving information. Vehicles are equipped with dynamics and GPS sensors. Ad-hoc vehicular networking (VANET) is used as media for communication. A specific algorithm is developed to collect anonymous information and suggest to drivers best...
Recent years, Vehicular ad hoc Network (VANET) attracts tremendous attention due to its broad application prospects. However, channel fading, frangible link, unstable network topology caused by vehicles' high mobility and strict requirements to the quality of service (QoS) have become major challenges of VANET. Many algorithms have been proposed to ensure a stable network topology and it has been...
The VANET (Vehicular Ad hoc Network) is a collection of mobile nodes forming a temporary network on variable topology, operating without base station and without 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...
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