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This paper is to introduce an approach to providing connectivity on public transport connecting to the wider Internet via heterogeneous networks and prioritizing traffic according to service classes. The authors present a packet prioritization for each service class: premium, intermediate and default. A railway scenario is considered as their case study to evaluate the prioritization mechanisms. Experiments using the NS-2 simulator are to implement and evaluate the model. Results are presented to show the effectiveness of the model for network mobility in heterogeneous environments.
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