Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Delay Tolerant Networks"”.
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Privacy Preserving on Delay Tolerant Networks
Common arguments related to Delay-Tolerant Networks often focus on routing performances, energy consumption or quality of service. Despite the fact privacy related issues are generally considered critical, they do not arouse the same interest as the other reported aspects. For instance, when the …
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Towards efficacy and efficiency in sparse delay tolerant networks
… has enabled a new way of communication via Delay Tolerant Networks (DTNs), whereby messages are routed by the personal devices carried by ever-moving people. Although a DTN is a type of Mobile Ad Hoc Network (MANET), traditional MANET solutions are ill-equipped to accommodate message …
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Experimental Evaluation of Convergence Layers in Delay Tolerant Networks
… are not designed to perform efficiently in Delay Tolerant Networks (DTN) environments that operate in environments with high delays, significant losses, and intermittent connectivity. DTN uses the Bundle Protocol (BP) in the Bundle layer for storing and forwarding data units to deal with the …
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Social-based trustworthy data forwarding in vehicular delay tolerant networks
… message overhead, delivery ratio, and average delay are per-formed to evaluate the efficiency and effectiveness of our proposed scheme. Lastly, we tackled the security and privacy challenges existing in social-aware data diffusion by proposing an efficient vehicle social evaluation (EVSE) …
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Orchestra Framework: Protocol Design for Ad Hoc and Delay Tolerant Networks using Genetic Algorithms
… to design and implement routing protocols for delay tolerant networks (DTNs). DTNs are a special type of ad hoc network characterized by intermittent connectivity, long propagation delays and high loss rate. Thus, traditional ad hoc routing approaches cannot be used in DTNs, and special …
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Techniques For Alleviating the Inconveniences Caused by Mobility In Wireless Environments
… over the last decade. The adoption of wireless networks has greatly changed people's lifestyle. Wireless has become an essential part of our daily life. Mobility support is one of the most significant benefits of wireless networks. However, such a great convenience doesn't come for granted and …
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SECURE AND EFFICIENT INFORMATION MANAGEMENT IN DELAY(DISRUPTION) TOLERANT NETWORK
… the store and forward paradigm, also called Delay-tolerant Networks (DTNs). In DTN, the limited bandwidth, energy, and contacts among the nodes, and their interdependency impose several challenges such as sensitive data leakage to malicious nodes, redundant data generation, limited and …
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Leveraging clustering for efficient communication in opportunistic networks
… design protocols for efficient communication in delay tolerant networks (DTNs), with a particular focus on pocket switched networks (PSNs), an emerging class of ad hoc networks made up of smartphones and other portable mobile devices carried by humans. Communication in such an infrastructure-less …
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Dynamic Trust Management for Mobile Networks and Its Applications
Trust management in mobile networks is challenging due to dynamically changing network environments and the lack of a centralized trusted authority. In this dissertation research, we design and validate a class of dynamic trust management protocols for mobile networks, and demonstrate the utility …
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Multimedia data dissemination in opportunistic systems
Opportunistic networks (OppNets) are human-centric mobile ad-hoc networks, in which neither the topology nor the participating nodes are known in advance. Routing is dynamically planned following the store-carry-and-forward paradigm, which takes advantage of people mobility. This widens the range …
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Applying Multi-Packet Reception with DTN in Vehicular Ad-hoc Networks
… routing schemes. VANET usually fits in Delay Tolerant Network (DTN) in which nodes are partially connected and existing path may not available between partial nodes due to limited distance for wireless transmissions. To achieve successful packets delivery in DTN, routing protocols have …
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Creation of a covert communications network for evasion of surveillance
<p>People all around the world have their internet access censored or monitored by governments or large corporations. Whistleblowers and human rights activists oftentimes need to communicate in secret to avoid persecution by the powerful organization monitoring their communications. Current …
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LARGE SCALE NETWORK PROTOCOL EMULATION ON COMMODITY CLOUD
… that CloudNet is scalable to thousand node networks while providing accurate emulation results.
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Social network support for data delivery infrastructures
… Our thesis is that information encoded in social networks can be used to tailor content staging decisions to the user base and thereby build better data delivery infrastructures. This claim is supported by two case studies, which apply social information in challenging situations where traditional …
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Leveraging structure for communication in human-centric DTNs
Current delay- and disruption-tolerant networks are human-centric in nature, in that mobility and communication tend to follow human-based characteristics, such as certain high-level mobility patterns, the development of groups, clustering, and variance in popularity. These networks do not rely on …