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Mobility Models of Vehicular Networks
Abstract
A key component for VANET simulations is a realistic vehicular mobility model that ensures conclusions drawn from simulation experiments will carry through to real deployments. However, VANET simulations raise many new questions about suitable levels of details in simulation models. To get accurate results, the mobility models of Vehicular Networks should be as realistic as possible, and involve road-maps with all constraints and facilities related to the vehicular movement. In this chapter, the authors provide an overview of some mobility models that are relevant to VANETs. The criteria of applicability they consider here is the employment of road maps, and thus limiting the nodes movements into the routes, instead of moving them in a wide open area. They compare different models based on the parameters they use. For instance, some models use traffic control mechanisms (stop signs or traffic lights) at route intersections, and some just assume continuous movement at these points. Some assume routes to be single-lane, some others support multi-lanes routes. Some define the security distance, while others just ignore this parameter.
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