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Simulation is the most frequently adopted approach for evaluating protocols and algorithms for Vehicular Ad hoc Networks (VANETs) and Delay-Tolerant Networks (DTNs). Usually, simulation tools use mobility traces to build the network topology based on the existing contacts between mobile nodes. However, quality of the traces, in terms of spatial and temporal granularity of each entry in the logfile,...
This work models the traffic congestion minimization as the multicommodity flow problem, which minimizes the amount of vehicles that travels in the same streets. Based on two constructive heuristics proposed in this study (Random Routes and Sorted Routes), we have developed and evaluated four new heuristics, being two local search and two metaheuristics of reactive GRASP. The results have shown that...
The context-aware computing is a research field that defines systems capable of adapting their behavior according to any relevant information about entities of interest. The ubiquitous computing is closely related to the use of contexts, since it aims to provide personalized, transparent and on-demand services. Ubiquitous systems are frequently shared among multiple users, which may lead to conflicts...
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