Juliano Fischer Naves

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In Delay and Disruption Tolerant Networks (DTNs), the message delivery rate is impacted by the buffer management policy adopted by nodes once buffer overflows occur frequently. This paper proposes two new buffer management policies. The first one, called LPS (Less Probable Sprayed), uses the messages delivery probability and estimates the number of replicas(More)
In this paper, we propose a custody-based approach to improve network performance in DTNs. Therefore, we introduce a mechanism that comprises a joint-custody scheme, named Limited Joint Custody (LJC) and a forwarding policy, named Forward Custody First (FCF). LJC uses a limited replication mechanism to control the number of custodians per bundle in the(More)
The routing protocols proposed for Delay and Disruption Tolerant Networks (DTNs) often employ acknowledgements. The goal is to increase the available space in buffers and also to avoid messages from being dropped unnecessarily due to buffer overflow. Protocols that employ such technique, however, are prone to suffer with from the acknowledgement(More)
Routing protocols for Delay and Disruption Tolerant Networks (DTNs) are prone to suffer from malicious behavior of nodes. Particularly, in the acknowledgment counterfeiting attack, malicious nodes forge acknowledgments in order to negatively impact network performance by removing from buffer messages that were not yet delivered to the destination. This(More)
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