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Recent vehicular ad hoc network routing protocols have relied on geographic forwarding and careful selection of road segments as ways to reduce the impact of individual vehicle movements. This paper shows how a virtualization layer and a new protocol running on top of it —called VNIBR, intersection-based routing on virtual nodes—can achieve better performance than state-of-the-art approaches, enabling...
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 three different...
The VaNetLayer is a cluster-based approach to handle communications in vehicular ad-hoc networks, furnishing an abstraction of fixed geographical regions served by virtual nodes as a means to tackle the challenges raised by the mobility of the real nodes. Previous studies have shown that the VaNetLayer can be used to implement routing protocols that achieve good performance —in terms of packet delivery...
We present the SPORANGIUM platform that deploys sporadic social networks (SSNs) among people who happen to be in a common place, by establishing ad-hoc connections over their respective mobile devices. The idea is to boost interactions among strangers who might share common interests in places like museums, theatres and stadiums, taking care of multiple concurrent flows of information and enabling...
The growth of mobile data traffic is urging on the development of mechanisms to route cellular traffic through alternative networks. In this paper, we present an approach to do mobile data offloading from/to vehicular ad hoc networks (VANETs), grounded on a virtualization layer and a new routing protocol on top of it. The virtualization layer deals with the issues derived from the mobility of the...
Intersection-based geographical routing algorithms have become predominant in the realm of vehicular ad-hoc networks (VANETs), with forwarding strategies that create road-based paths a way to avoid dead ends and to prevent losses due to the presence of buildings. However, there remain problems associated to the location service that must be in place to provide accurate location data of the destination...
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