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Dissertations / Theses on the topic 'Mobile opportunistic networks'

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Published: 4 June 2021

Last updated: 7 September 2023

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1

Erramilli, Vijay. "Forewarding in Mobile Opportunistic Networks." Boston University Computer Science Department, 2009. https://hdl.handle.net/2144/1722.

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Recent advances in processor speeds, mobile communications and battery life have enabled computers to evolve from completely wired to completely mobile. In the most extreme case, all nodes are mobile and communication takes place at available opportunities – using both traditional communication infrastructure as well as the mobility of intermediate nodes. These are mobile opportunistic networks. Data communication in such networks is a difficult problem, because of the dynamic underlying topology, the scarcity of network resources and the lack of global information. Establishing end-t

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2

Pietiläinen, Anna-Kaisa. "Opportunistic mobile social networks at work." Paris 6, 2010. http://www.theses.fr/2010PA066587.

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Les réseaux mobiles opportunistes ad-hoc se forment lorsque des terminaux mobiles portés par des utilisateurs communiquent entre eux sans aucune infrastructure. Ils diffèrent ainsi des réseaux classiques comme Internet dont l'architecture suppose la disponibilité instantanée de chemins reliant les hôtes et dont les délais de propagation, et le taux de perte des paquets, sont faibles. Dans les réseaux opportunistes, la mobilité des individus induit de nombreuses déconnexions et de grandes variations des délais. Dans cette thèse nous adoptons une démarche expérimentale pour concevoir et analyser

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3

Heinemann, Andreas. "Collaboration in Opportunistic Networks." Phd thesis, Saarbrücken VDM Verlag Dr. Müller, 2007. http://tuprints.ulb.tu-darmstadt.de/834/1/heinemann07-diss.pdf.

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Motivation. With the increasing integration of wireless short-range communication technologies (Bluetooth, 802.11b WiFi) into mobile devices, novel applications for spontaneous communication, interaction and collaboration are possible. We distinguish between active and passive collaboration. The devices help users become aware of each other and stimulate face-to-face conversation (active collaboration). Also, autonomous device communication for sharing information without user interaction is possible, i.e., devices pass information to other devices in their vicinity (passive collaboration). Bo

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4

Panidis, Panteleimon. "Middleware for Context-Aware Opportunistic Networks." Thesis, KTH, Kommunikationssystem, CoS, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92261.

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Mobile devices such as palmtops and cell phones are continuously increasing in capabilities and popularity. At the same time, due to their decreasing price they are becoming more and more attractive and available to the average customer. This has lead to the development of many new applications for such portable electronic devices. Mobile devices tend to have increasing local resources in terms of memory/storage and CPU [2]. Despite these improvements in hardware attributes, there are still limitations that characterize these portable devices and which have not improved as quickly as the incre

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5

Yang, Zhimin. "Opportunistic Computing in Wireless Networks." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1267743144.

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6

Huang, Rui. "Providing Location-Privacy in Opportunistic Mobile Social Networks." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37353.

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Users face location-privacy risks when accessing Location-Based Services (LBSs) in an Opportunistic Mobile Social Networks (OMSNs). In order to protect the original requester's identity and location, we propose two location privacy obfuscation protocols utilizing social ties between users. The first one is called Multi-Hop Location-Privacy Protection (MHLPP) protocol. To increase chances of completing obfuscation operations, users detect and make contacts with one-hop or multi-hop neighbor friends in social networks. Encrypted obfuscation queries avoid users learning important information esp

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7

Zhang, Boying. "Large Scale Message Dissemination in Mobile Opportunistic Networks." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338398822.

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8

Kouyoumdjieva, Sylvia T. "System Design for Opportunistic Networks." Doctoral thesis, KTH, Kommunikationsnät, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176479.

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Device-to-device communication has been suggested as a complement to traditional cellular networks as a means of offloading cellular traffic. In this thesis we explore a solution for device-to-device communication based on opportunistic content distribution in a content-centric network. Communication opportunities arise as mobile nodes roam around in an area and occasionally enter in direct communication range with one another. We consider a node to be a pedestrian equipped with a mobile device and explore the properties of opportunistic communication in the context of content dissemination in

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9

Phe-Neau, Tiphaine. "Properties and Impact of Vicinity in Mobile Opportunistic Networks." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-00957864.

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The networking paradigm uses new information vectors consisting of human carried devices is known as disruption-tolerant networks (DTN) or opportunistic networks. We identify the binary assertion issue in DTN. We notice how most DTNs mainly analyze nodes that are in contact. So all nodes that are not in contact are in intercontact. Nevertheless, when two nodes are not in contact, this does not mean that they are topologically far away from one another. We propose a formal definition of vicinities in DTNs and study the new resulting contact/intercontact temporal characterization. Then, we exami

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10

Chen, Yuan. "Opportunistic Overlays: Efficient Content Delivery in Mobile Environments." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-04082005-002659/unrestricted/chen%5Fyuan%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Computing, Georgia Institute of Technology, 2005.<br>Riley, George, Committee Member ; Zhou, Dong, Committee Member ; Pu, Calton, Committee Member ; Ahamad, Mustaque, Committee Member ; Schwan, Karsten, Committee Chair. Vita. Includes bibliographical references.

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11

Zakhary, Sameh Rasmy. "Collaborative location privacy-aware forwarding for opportunistic mobile networks." Thesis, University of Nottingham, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.718849.

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The worldwide deployment of mobile devices incorporated into our everyday activities made available an abundance of private location information. This information has sparked many innovative applications, but raised challenging users’ location-privacy problems. This thesis is concerned with the problem of offering source fc-anonymity location-privacy when contacting a Location-based Service (LBS) using Opportunistic Networks (OppNets). We propose a novel, fully distributed, self organized and collaborative fc-anonymity protocol (Location-Privacy-Aware Forwarding (LPAF) protocol) to protect u

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12

Zhao, Xiaogeng. "An adaptive approach for optimized opportunistic routing over Delay Tolerant Mobile Ad hoc Networks." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1004822.

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This thesis presents a framework for investigating opportunistic routing in Delay Tolerant Mobile Ad hoc Networks (DTMANETs), and introduces the concept of an Opportunistic Confidence Index (OCI). The OCI enables multiple opportunistic routing protocols to be applied as an adaptive group to improve DTMANET routing reliability, performance, and efficiency. The DTMANET is a recently acknowledged networkarchitecture, which is designed to address the challenging and marginal environments created by adaptive, mobile, and unreliable network node presence. Because of its ad hoc and autonomic nature,

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13

Liu, Yang. "QoS-Aware Data Query and Dissemination in Mobile Opportunistic Networks." Thesis, University of Louisiana at Lafayette, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3687694.

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<p> Mobile opportunistic networks are formed by mobile users who share similar interests and connect with one another by exploiting Bluetooth and/or WiFi connections. Such networks not only re-assemble the real-world interaction between people, but also can effectively propagate data among mobile users. This dissertation focuses on QoS-aware data query and dissemination in mobile opportunistic networks. </p><p> Firstly, I develop a distributed data query protocol for practical applications. To demonstrate the feasibility and efficiency of the proposed scheme and to gain useful empirical ins

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14

Jun, Jung Hyun. "Analysis of Optimal Strategies to Minimize Message Delay in Mobile Opportunistic Sensor Networks." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1312294982.

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15

Scone, Sion. "Opportunistic communication schemes for unmanned vehicles in urban search and rescue." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/7269.

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In urban search and rescue (USAR) operations, there is a considerable amount of danger faced by rescuers. The use of mobile robots can alleviate this issue. Coordinating the search effort is made more difficult by the communication issues typically faced in these environments, such that communication is often restricted. With small numbers of robots, it is necessary to break communication links in order to explore the entire environment. The robots can be viewed as a broken ad hoc network, relying on opportunistic contact in order to share data. In order to minimise overheads when exchanging d

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16

Shigueta, Roni. "Channel Allocation in Mobile Wireless Networks." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX037/document.

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L'utilisation intensive des services de données mobiles a de plus en plus augmenté la consommation de ressources sur les réseaux sans fil. La ressource principale utilisée pour la communication sans fil est le spectre de fréquence. À mesure que le trafic de données augmente brusquement, de nouvelles bandes du spectre de fréquences ne sont pas disponibles dans la même proportion, ce qui rend le spectre de fréquence de plus en plus rare et saturé. Plusieurs propositions ont été présentées pour optimiser l'allocation des canaux de fréquences afin d'atténuer les interférences entre les liaisons pr

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17

Yusuf, Lateef. "Improving quality of experience for mobile video streaming." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53423.

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Thanks to their increasing sophistication and popularity, mobile devices, in the form of smartphones and tablets, have become the fastest growing contributors to Internet traffic. Indeed, smartphones are projected to account for 50% of global Internet traffic by 2017, with the share of mobile video increasing to about 40% of total Internet traffic. As users embrace Internet streaming of video, several studies have found that a small decrease in video quality leads to a substantial increase in viewer abandonment and disengagement rates. To handle the explosive growth in video traffic, Adaptive

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18

Tahooni, Mohammad. "Mobility-based Candidate Selection and Coordination in Opportunistic Routing for Mobile Ad-Hoc Networks." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31604.

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Opportunistic Routing (OR) is an effective and enhanced routing scheme for wireless multihop environment. OR is an approach that selects a certain number of best forwarders (candidates) at each hop by taking the advantage of the broadcast nature of the wireless medium to reach the destination. When a set of candidates receive the packet, they coordinate with each other to figure out which one has to forward the packet toward the destination. Most of the research in this area has been done in mesh networks where nodes do not have mobility. In this survey, we propose a new OR protocol for mobi

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19

Guercin, Sergio Rolando. "Performance Evaluation of Opportunistic Routing Protocols for Multi-hop Wireless Networks." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/38904.

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Nowadays, Opportunistic Routing (OR) is widely considered to be the most important paradigm for Multi-hop wireless networks (MWNs). It exploits the broadcast nature of wireless medium to propagate information from one point to another within the network. In OR scheme, when a node has new information to share, it rst needs to set its forwarding list which include the IDs and/or any relevant information to its best suited neighboring nodes. This operation is supported by the use of appropriate metrics. Then, it executes a coordination algorithm allowing transmission reliability and high t

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20

Rehmani, Mubashir Husain. "Opportunistic Data Dissemination in Ad-Hoc Cognitive Radio Networks." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00630214.

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Les progrès récents des technologies de communication et la prolifération de l'informatique sans fil et des dispositifs de communication, ont induit 'a une surcharge dans l'utilisation du spectre radio. Cependant, les expériences de la Commission Fédérale de Communication (FCC) ont révélé que l'utilisation du spectre varie entre 15% et 85%. Par conséquent, les réseaux radios cognitifs (Cognitive Radio Networks ou CRNs) sont proposés afin d'utiliser le spectre radio d'une manière opportuniste. Dans ce type de réseaux radios cognitifs, où les fréquences de transmission sont sélectionnées d'une m

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21

Nguyen, The An Binh [Verfasser], Ralf [Akademischer Betreuer] Steinmetz, and Michael [Akademischer Betreuer] Zink. "Quality-aware Tasking in Mobile Opportunistic Networks - Distributed Information Retrieval and Processing utilizing Opportunistic Heterogeneous Resources. / The An Binh Nguyen ; Ralf Steinmetz, Michael Zink." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/1167926331/34.

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22

KhoshgoftarMonfared, Alireza. "Tactical HPC: Scheduling high performance computers in a geographical region." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54934.

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Mobile devices are often expected to perform computational tasks that may be beyond their processing or battery capability. Cloud computing techniques have been proposed as a means to offload a mobile device's computation to more powerful resources. In this thesis, we consider the case where powerful computing resources are made available by utilizing vehicles. These vehicles can be repositioned in real time to receive computational tasks from user-carried devices. They can be either equipped with rugged high-performance computers to provide both computation and communication service, or they

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23

Wang, Yunsheng. "Designing Efficient Routing Protocols in Delay Tolerant Networks." Diss., Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/224066.

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Computer and Information Science<br>Ph.D.<br>This thesis presents the design and evaluation of routing protocols for efficient content delivery and dissemination in delay tolerant networks. With the advancement in technology, the communication devices with wireless interfaces become more and more universal. Delay tolerant networks (DTNs) are characterized by intermittent connectivity and limited network capacity. There exist several different application scenarios: connectivity of developing countries, vehicular DTN road communications, and social contact networks. In this thesis, we explore t

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24

Sammarco, Matteo. "Dissémination multi-contenus opportuniste : monitorage passif et adaptation aux conditions du réseau." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066573/document.

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La pénétration du marché des appareils mobiles a connu une croissance impressionnante ces dernières années. Smartphones, tablettes et ordinateurs portables sont devenus soit producteurs soit consommateurs de contenus générés par les utilisateurs. Les communications opportunistes permettent une couverture étendue dans les endroits où il n'existe aucune infrastructure réseau disponible et des stratégies de délestage de données pour aider les opérateurs à soulager la charge de leurs infrastructures. Dans cette thèse, nous considérons le cas de la diffusion opportuniste de plusieurs grands contenu

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Dudukovich, Rachel. "Application of Machine Learning Techniques to Delay Tolerant Network Routing." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1545036060190319.

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26

Zhan, Pengchang. "Optimizing Wireless Network Throughput: Methods and Applications." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1279.

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Ever since Marconi succeeded in his first demonstration on the possibility to communicate over the air overseas about a century ago, wireless communications have experienced dramatic improvements. Today's world sees the penetration of wireless communications into human life almost everywhere, from a simple remote control for TV to a cellular phone. With a better understanding of the adverse nature of the wireless propagation channels, engineers have been able to invent various clever techniques, i.e. Multiple Input Multiple Output (MIMO) technology, spread spectrum communications, Orthogonal F

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27

Benchi, Abdulkader. "Middleware Systems for Opportunistic Computing in Challenged Wireless Networks." Thesis, Lorient, 2015. http://www.theses.fr/2015LORIS372/document.

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Les réseaux mobiles opportunistes (ou OppNets, pour Opportunistic Networks) constituent une solution séduisante pour compléter les réseaux fixes d’infrastructure, voire compenser leur absence dans des zones sinistrées ou défavorisées. Les recherches menées ces dernières années ont principalement visé à permettre les transmissions dans les OppNets, mais ceci ne peut être qu’un premier pas vers une réelle exploitation de tels environnements contraints. L’informatique opportuniste (Opportunistic Computing) dépasse le cadre des seules transmissions, et introduit un nouveau paradigme d’exécution de

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Chancay, Garcia Leonardo Javier. "Evaluación y Modelado de Redes Oportunistas." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/124339.

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[ES] La disponibilidad y el rendimiento de las actuales tecnologías inalámbricas como WiFi o 4G, pueden tener serios problemas de congestión y propagación, especialmente en espacios muy concurridos, o bien ser inaccesibles en sitios remotos o con baja densidad de personas. La utilización de las Redes Oportunistas en este tipo de escenarios puede ser la solución a estos problemas. Estas redes se basan en la oportunidad de intercambiar mensajes utilizando algún tipo de tecnología de comunicación directa entre dispositivos móviles como son Bluetooth o WiFi. El rendimiento de las Redes Oportun

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Nguyen, Anh Dung. "Contributions to Modeling, Structural Analysis, and Routing Performance in Dynamic Networks." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2013. http://tel.archives-ouvertes.fr/tel-00908502.

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Cette thèse apporte des contributions à la modélisation, compréhension ainsi qu'à la communication efficace d'information dans les réseaux dynamiques peuplant la périphérie de l'Internet. Par réseaux dynamiques, nous signifions les réseaux pouvant être modélisés par des graphes dynamiques dans lesquels noeuds et liens évoluent temporellement. Dans la première partie de la thèse, nous proposons un nouveau modèle de mobilité - STEPS - qui permet de capturer un large spectre de comportement de mobilité humains. STEPS mets en oeuvre deux principes fondamentaux de la mobilité humaine : l'attachemen

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Nguyen, Anh-Dung. "Contributions to modeling, structural analysis, and routing performance in dynamic networks." Phd thesis, Toulouse, INPT, 2013. http://oatao.univ-toulouse.fr/9725/1/nguyen.pdf.

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This thesis contributes to the modeling, understanding and efficient communication in dynamic networks populating the periphery of the Internet. By dynamic networks, we refer to networks that can be modeled by dynamic graphs in which nodes and links change temporally. In the first part of the thesis, we propose a new mobility model - STEPS - which captures a wide spectrum of human mobility behavior. STEPS implements two fundamental principles of human mobility: preferential attachment and attractor. We show that this simple parametric model is able to capture the salient statistical properties

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31

Engelbrecht, Mario Johann. "Development of an energy and geographic aware opportunistic network coding scheme / Mario Johann Engelbrecht." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8689.

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The evolution of communication networks has led us to an era where you cannot only perform surgery halfway across the world, but do so while being in the comfort of your own home. By eliminating the need for wires, wireless networks revolutionised communication networks by enabling nodes to communicate while being in a mobile state. The concept opened many doors to new applications and possibilities. Network Coding is a technique that optimises the throughput of a network by coding packets. Geo-Routing is a routing method that operates by using the geographical distances between nodes as the r

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Said, Roméo. "Middleware for service provision in disconnected mobile ad hoc networks." Lorient, 2011. http://www.theses.fr/2011LORIS224.

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Mobile ad hoc networks (MANETs) are spontaneously formed out of a number of mobile devices that communicate thanks to short-range wireless communication capabilities (e. G. Wi-Fi, Bluetooth). In many ad hoc networks deployed in real conditions, mobile nodes can exhibit highly dynamic behaviors of mobility and volatility. Because of their behavior, the devices in such network environments form so-called "islands" whose topology evolves continuously, rather than a single fully connected network. In this work, I focus on this class of MANETs which I refer to as disconnected MANETs. Network-wide c

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Fernandes, Soares Mota Vinicius. "Déchargement (offloading) infrastructuré et dispositif-à-dispositif dans les réseaux cellulaires." Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC1161/document.

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Cette thèse aborde le problème de la surcharge des réseaux des données des opérateurs mobiles. La croissance des abonnements au haut débit mobile engendre aujourd'hui de nombreux goulots d'étranglement dans ces réseaux. Plus particulièrement, la disponibilité de la bande passante sur les stations de bases est de plus en plus réduite. Pour faire face à cette problématique, les opérateurs mobiles essaient de décharger le trafic des données de leurs infrastructures en déployant des réseaux de substitution à petites cellules, tels que les femtocells ou réseaux WiFi publics. Ces réseaux restent néa

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Moschetto, Danilo Augusto. "Uma arquitetura de comunicação oportunística." Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/435.

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Made available in DSpace on 2016-06-02T19:05:42Z (GMT). No. of bitstreams: 1 3072.pdf: 1703350 bytes, checksum: 5213111edf7f7c40880a68e93c0462c0 (MD5) Previous issue date: 2010-02-18<br>Universidade Federal de Sao Carlos<br>Mobile computing devices often present high processing power and include several wireless network interfaces. 4G networks promise to provide a unified IP based infrastructure with QoS and security support for the communications using such devices. Transmission delays, and network disruptions, however, are often common when considering the current transmissions of mobile u

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Canu, Maël. "Détection de communautés orientée sommet pour des réseaux mobiles opportunistes sociaux." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066378/document.

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Les travaux présentés dans la thèse s'inscrivent dans le cadre de l'analyse des graphes de terrain (complex networks) et plus précisément de la tâche de détection de communautés, c'est-à-dire la reconnaissance algorithmique de sous-graphes particulièrement denses. Nous nous intéressons spécifiquement à l'implémentation d'une telle méthode dans un contexte fortement décentralisé et distribué : des réseaux MANET opportunistes formés par de petits objets connectés communiquant en pair-à-pair. Afin de tenir compte des contraintes d'exécution d'algorithme dans de tels réseaux, les travaux présentés

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Makke, Ali. "Pervasive Service Provisioning in Intermittently Connected Hybrid Networks." Thesis, Lorient, 2015. http://www.theses.fr/2015LORIS362/document.

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La vision de l'informatique ubiquitaire permettant de construire des espaces intelligents interactifs dans l'environnement physique passe, peu à peu, du domaine de la recherche à la réalité. La capacité de calcul ne se limite plus à l'ordinateur personnel mais s'intègre dans de multiples appareils du quotidien, et ces appareils deviennent, grâce à plusieurs interfaces, capables de communiquer directement les uns avec les autres ou bien de se connecter à Internet.Dans cette thèse, nous nous sommes intéressés à un type d'environnement cible de l'informatique ubiquitaire qui forme ce que nous app

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Singh, Chandramani Kishore. "Resource Management In Celluar And Mobile Opportunistic Networks." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2424.

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In this thesis we study several resource management problems in two classes of wireless networks. The thesis is in two parts, the first being concerned with game theoretic approaches for cellular networks, and the second with control theoretic approaches for mobile opportunistic networks. In Part I of the thesis, we first investigate optimal association and power control for the uplink of multichannel multicell cellular networks, in which each channel is used by exactly one base station (BS) (i.e., cell). Users have minimum signal to interference ratio(SINR) requirements and associate with B

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Singh, Chandramani Kishore. "Resource Management In Celluar And Mobile Opportunistic Networks." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2424.

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In this thesis we study several resource management problems in two classes of wireless networks. The thesis is in two parts, the first being concerned with game theoretic approaches for cellular networks, and the second with control theoretic approaches for mobile opportunistic networks. In Part I of the thesis, we first investigate optimal association and power control for the uplink of multichannel multicell cellular networks, in which each channel is used by exactly one base station (BS) (i.e., cell). Users have minimum signal to interference ratio(SINR) requirements and associate with BS

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BERGAMINI, LORENZO. "Opportunistic computing in fully decentralized and mobile networks." Doctoral thesis, 2013. http://hdl.handle.net/11573/918747.

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The interplay of social networking platforms, information retrieval techniques and dynamic wireless communications has grown exponentially over the past few years. Together, these tools are shaping new forms of fully decentralized computation and applications. These opportunities are ampli ed by the relative simplicity to set up networks of small or tiny devices, such as wireless sensors and active or passive RFIDs, that allow to extract information from the environment, to process and to share it, expanding our data access and interaction capabilities and blurring the border between the digi

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Hsu, Yu-Feng, and 徐侑豐. "Message Delivery and Management in Mobile Opportunistic Networks." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/22rx77.

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博士<br>國立中央大學<br>通訊工程學系<br>106<br>The mobile opportunistic network (MON) is an emerging thread of mobile and wireless networks. In MONs, message distribution takes advantage of node mobility and opportunistic encounters with other nodes over infrastructure-less networks. Network topologies in MONs are fragmented dynamically, and persistent end-to-end paths between any pairs of source and destination nodes cannot be guaranteed. Hence, many studies resort to store-carry-and-forward transfer model originating from the delay/disruption tolerant networks (DTNs) architecture to deliver messages in MO

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Khosravi, Arian. "Opportunistic routing in intermittently connected wireless mobile social networks." Thesis, 2012. http://hdl.handle.net/1828/3983.

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Consumer electronics such as cellular phones and portable computers with short-range communication capabilities have enabled the large-scale information dissemination through user mobility and contact, without the assistance of communication infrastructures. In such a new communication paradigm, one challenge is to determine when and how to forward a message to the destination, possibly through a series of third parties. This problem has attracted a lot of attention in the literature lately, with proposals ranging from epidemic to single or multi-copy spray and wait or focus strategies. Howeve

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Zhao, Xiaogeng. "An adaptive approach for optimized opportunistic routing over Delay Tolerant Mobile Ad hoc Networks /." 2007. http://eprints.ru.ac.za/1179/.

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Kong, Chenguang. "Content Dissemination in Mobile Social Networks." 2016. http://scholarworks.gsu.edu/cs_diss/112.

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Mobile social networking(MSN) has emerged as an effective platform for social network users to pervasively disseminate the contents such as news, tips, book information, music, video and so on. In content dissemination, mobile social network users receive content or information from their friends, acquaintances or neighbors, and selectively forward the content or information to others. The content generators and receivers have different motivation and requirements to disseminate the contents according to the properties of the contents, which makes it a challenging and meaningful problem to eff

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Nguyen, The An Binh. "Quality-aware Tasking in Mobile Opportunistic Networks - Distributed Information Retrieval and Processing utilizing Opportunistic Heterogeneous Resources." Phd thesis, 2018. https://tuprints.ulb.tu-darmstadt.de/7748/1/2018-09-20_Nguyen_The-An-Binh.pdf.

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Advances in wireless technology have facilitated direct communication among mobile devices in recent years, enabling opportunistic networks. Opportunistic networking among mobile devices is often utilized to offload and save cellular network traffic and to maintain communication in case of impaired communication infrastructure, such as in emergency situations. With a plethora of built-in capabilities, such as built-in sensors and the ability to perform even intensive operations, mobile devices in such networks can be used to provide distributed applications for other devices upon opportunisti

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Chavan, Gautam Ravendra. "Design and analysis of a mobile file sharing system for opportunistic networks." 2009. http://hdl.handle.net/10106/1744.

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Quelhas, Rui Filipe Pedro. "Improving opportunistic with social context communications." Master's thesis, 2011. http://hdl.handle.net/1822/27978.

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Dissertação de mestrado em Engenharia Informática<br>Opportunistic or Delay-tolerant Networks (DTNs) appeared as a promising concept towards what could be the future Internet. They pretend to overcome limitations faced by mobile environments with dynamic topologies, where the behavior of the network nodes leads to communication delay and disruptions. Following a rationale that undermines some wrong key assumptions made by traditional TCP/IP models, and considering them as features, not as exceptions, they introduce a novel message communication model, store-andforward, on which nodes s

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Liu, Yi-Shang, and 劉于翔. "Energy Efficiency of Mobile Devices with Fuzzy Logic Control in Multi-Radio Opportunistic Networks." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/92qmy7.

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碩士<br>國立臺中科技大學<br>資訊工程系碩士班<br>104<br>Since the development of smart phones and wireless network technology, mobile devices have become an integral part of our daily lives, work, entertainment, browse information in today. Most people use mobile devices to accomplish their needs. Mobile devices widely are used, but the battery life of mobile devices is limited. Reducing power consumption, and remaining stable internet services are important issues. In this study, we use Dual-Radio Opportunistic Networking for Energy Efficiency (DRONEE) which is a mixed network method using the cluster concept o

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Venkataramanan, Srinivasan. "Influence Dynamics on Social Networks." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/3114.

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With online social networks such as Facebook and Twitter becoming globally popular, there is renewed interest in understanding the structural and dynamical properties of social networks. In this thesis we study several stochastic models arising in the context of the spread of inﬂuence or information in social networks. Our objective is to provide compact and accurate quantitative descriptions of the spread processes, to understand the eﬀects of various system parameters, and to design policies for the control of such diﬀusions. One of the well established models for inﬂuence spread in social

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Venkataramanan, Srinivasan. "Influence Dynamics on Social Networks." Thesis, 2014. http://hdl.handle.net/2005/3114.

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With online social networks such as Facebook and Twitter becoming globally popular, there is renewed interest in understanding the structural and dynamical properties of social networks. In this thesis we study several stochastic models arising in the context of the spread of inﬂuence or information in social networks. Our objective is to provide compact and accurate quantitative descriptions of the spread processes, to understand the eﬀects of various system parameters, and to design policies for the control of such diﬀusions. One of the well established models for inﬂuence spread in social

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Ramalho, Luís Paulo de Sousa. "Avaliação de desempenho de redes oportunistas." Master's thesis, 2016. http://hdl.handle.net/1822/47328.

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Dissertação de mestrado em Engenharia de Redes e Serviços Telemáticos<br>Nos últimos anos, a grande utilização de dispositivos móveis tem levado a um considerável aumento de interesse da comunidade de investigação e da indústria na área das redes oportunistas. Nestas redes, os dispositivos móveis aproveitam a sua mobilidade para trocarem dados entre si. Uma vez que estes dispositivos são principalmente transportados por humanos, surgem oportunidades de contacto aquando da proximidade física entre eles, permitindo essa troca de dados. É por esta razão que os investigadores têm vindo a explorar

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