Resilience differentiation in wireless Internet access

Always Best Connected and Differentiated Resilience is investigated as means to increase dependability and performance when accessing Internet from a mobile node or terminal. Providing Differentiated Resilience that gives preference to certain applications and mobile nodes will be needed, in particular in disaster and emergency scenarios. We show that using reservations for high priority traffic with protection can, under the right circumstances, provide significantly increased reliability as compared to ldquobest effortrdquo. But when resources are scarce the protection scheme should avoid using excessive resources. This means that such schemes must be provided in a controlled manner to the few that really requires this level of reliability. As wireless scenarios can be highly dynamic, the number of high priority mobile nodes in a given (small) area can potentially vary a lot over time. This suggests, when looking at the results, that the usage of protection should be adapted to the specific situation, or that a more complex protection mechanism should be used when the intensity of high priority nodes is relative high.