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The increasing interest in vehicular communications draws attention to scalability and network congestion problems and therefore on techniques to offload the traffic, typically carried through the infrastructure, to the Vehicle-to-vehicle (V2V) network. Floating content (FC) represents a promising paradigm to share ephemeral content without direct support from infrastructure. It is based on constraining...
Advances in the Internet of Things (IoT) infrastructures are enabling the gathering, processing and inference of a wide array of data, enabling more agile decision management frameworks in several contexts, including vehicle routing and navigation. Coupled with crowd-sensing, these decision management frameworks gain further advantage in terms of data availability. This work concerns itself with safety...
It is increasing for mobile users to access mobile network in a moving vehicle like train or subway. For the high quality contents services in vehicles, we deploy the network access node and the mobile service platform on vehicles. So users connect to the Wi-Fi hot spot and use the contents services with high speed. The people who connect to the same Wi-Fi on the train or subway form the proximity...
In this paper, we present an online landmark selection method for distributed long-term visual localization systems in bandwidth-constrained environments. Sharing a common map for online localization provides a fleet of autonomous vehicles with the possibility to maintain and access a consistent map source, and therefore reduce redundancy while increasing efficiency. However, connectivity over a mobile...
Cloud-based vehicular networks is a new paradigm to improve the vehicular services through distributing computation tasks between remote clouds and local vehicular terminals. To further reduce the latency and the transmission cost of the computation offloading, we propose a cloud-based Mobile Edge Computing (MEC) offloading framework in vehicular networks. In the framework, efficient computation offloading...
Position information of vehicles is a vital requirement in most VANETs (Vehicular ad hoc networks) applications. Thus, positioning is one of the critical issues in VANETs. The existing vehicle localization schemes only consider static estimating problem, while little or no attention is paid to the effect of vehicle movement on localization performance. In this paper, we propose a real-timely vehicle...
VANETs is used to provide the network environment for intelligent transportation system in which the node speed is very high and topology changes frequently. So that route acquisition and nodes communications in the network are the tedious task. We can't apply the routing protocols of MANETs on VANETs directly. In this paper we describe an approach that is based on firefly algorithm (an implementation...
The rapid increase of portable devices providing a multitude of mobile applications have led to excessive cellular traffic demands and consequently to the overload of cellular networks. Recently, migrating this traffic by opportunistic vehicular networks has attracted a great interest and appeared as a promising solution. Indeed, only a limited set of vehicles (seeds) is selected to download objects...
The development and evaluation of Vehicle-to-X (V2X) applications using mobile cellular networks by means of field tests is time consuming and expensive. Simulations can speed up the development and largely reduce evaluation costs. However, due to the complex nature of the network involved, it is quite difficult to be certain that the results obtained using simulation will actually match the observable...
VANETs (Vehicular Adhoc Networks) is the Subclass of MANETs (Mobile Adhoc Networks). It provides remote communication among vehicles to roadside equipments and it gives the innovation that uses moving cars as a hub in a system to make the portable system that is each car which is participating is either a remote switch or hub. As, VANETs finds the applications in industry as well as commercial. The...
We consider a surveillance system for public transport vehicles, which is based on the collection of on-board videos, and the upload via mobile network to a central security system of video segments corresponding to those cameras and time intervals involved in an accident. We assume that vehicles are connected to several wireless interfaces, provided by different Mobile Network Operators (MNOs), each...
In this work we investigate the benefits of an hybrid architecture integrating both mobile roadside units, and stationary roadside units supporting the operation of vehicular networks. Since traffic fluctuates, an architecture employing just stationary roadside units might not be able to properly support the network operation all the time. Similarly, an architecture composed just of mobile roadside...
In this keynote, we look the fundamental limits of the information propagation speed in large scale mobile and intermittently connected networks, where end-to-end multihop paths may not exist and communication routes may only be available through time and mobility. We first introduce some analytical tools to derive generic theoretical bounds for the information propagation speed in this networks....
The main objective of this paper is to present a real-time system to improve road safety through the use of event alerts. A collaborative community where users can share traffic warnings to help other users is here proposed. The method is based both on the verification votes of the users, and on their profiles and trust levels. Each user is assigned a trust level depending on its previous behavior...
The main objective of this paper is to present a real-time system to improve road safety through the use of event alerts. A collaborative community where users can share traffic warnings to help other users is here proposed. The method is based both on the verification votes of the users, and on their profiles and trust levels. Each user is assigned a trust level depending on its previous behavior...
As researchers got interested in the vehicular ad hoc networks (VANET), several approaches and uses have been given. One of the most interesting is the network congestion control in an ad hoc environment. Our work consists of introducing a new approach in congestion control of Vehicular Ad Hoc Networks (VANET), using a new model. Our model is based on the hop by hop congestion control methods. This...
Heterogeneous Mobile Adhoc Network still encounters problem in dedicated services with robust link establishment. The reasons are not only conventional factor e.g. energy consumption, excessive bandwidth utilization, dynamic topology but also unconventional factor e.g. protocol differences. To a large extent, the evolution of Delay Tolerant Network has been successful in addressing the routing issues...
Cloud computing and Vehicular Communications are profoundly emerging fields towards realization of smart cities. While cloud computing is stage of development, vehicular cloud computing combines the benefits of Mobile Cloud Computing (MCC) and vehicular communications. Recent studies expect that vehicular cloud computing will be the gateway to the future of transportation systems. However, the development...
Vehicle Communication is a research hotspot in recent years, and 3GPP has listed V2X communication into the process of standardization. V2X communication has a more stringent requirement for QoS and transmission delay, especially for the road safety messages. The unnecessary handovers between two base stations in a short interval, so-called ping-pong effect, impact on the quality of communication...
Introducing an IP-based communication system into the mountain rescue domain would enable carrying out search and rescue missions in an effective way. With efficient mobility and multihoming support, a Mountain Rescue Team would be able to establish more effective and reliable Internet communication. In this paper, we present the Multihomed Mobile Network Architecture (MMNA), a comprehensive multihomed...
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