Paulo Rogério Pereira

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The guaranteed delivery of critical data is an essential requirement in most Wireless Sensor Network (WSN) applications. The paucity of energy, communication, processing and storage resources in each WSN node causes the TCP transport model (widely used in broadband networks) to be inefficient in WSNs, a reason why new WSN-specific reliable transport(More)
— In this paper, an implementation of a transport protocol to be used in Wireless Multimedia Sensor Networks (WMSNs) is presented. The objective of the protocol is to guarantee reliability by recovering lost packets while dealing with the limited energy, processing and memory capabilities of the devices typically used in these networks. The implemented(More)
Networks with frequent and long duration partitions prevent common Internet protocols from working successfully. For protocols to work properly in these Delay/Disruption Tolerant Networks (DTNs), a new protocol layer was proposed that acts on top of the transport layer for the end-to-end exchange of messages (called bundles) taking advantage of scheduled,(More)
— Vehicular Delay-Tolerant Networks (VDTNs) use vehicles to carry data between network nodes, enabling network connectivity in sparse or partitioned opportunistic networks, where the node density is not high enough to establish end-to-end links. By implementing a store-carry-and-forward paradigm, VDTNs allow delay-tolerant data traffic from a variety of(More)