Academic literature on the topic 'Tolerant network (DTN)'

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Journal articles on the topic "Tolerant network (DTN)"

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Tikhonov, Eugene, Donat Schneps-Schneppe, and Dmitry Namiot. "Delay Tolerant Network Protocols in a Railway Network." International Journal of Embedded and Real-Time Communication Systems 12, no. 4 (2021): 1–17. http://dx.doi.org/10.4018/ijertcs.2021100101.

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The paper is devoted to the analysis of the effectiveness of the DTN (delay tolerant network) system in a communication network on a railway line. Trains act as moving objects that are sending and receiving messages to/from an external network. Trains may also transmit telemetry collected during movement. The article presents data on the effectiveness of the DTN network with various protocols in terms of reducing the delay in the message and telemetry delivery and in increasing the total number of delivered messages in the railway scenario. An analysis of railway lines with various loads and different coverage of mobile networks was made. These models are based on real railway maps and train schedules. The effectiveness of DTN during migration to networks of a higher data rate (5G) and networks with satellite connection of trains is discussed.
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M., Janani, and Umarani P. "EFFICIENT FILE SEARCH IN DELAY TOLERANT NETWORKS WITH SOCIAL CONTENT AND CONTACT AWARENESS." International Journal of Advanced Trends in Engineering and Technology 2, no. 1 (2017): 39–42. https://doi.org/10.5281/zenodo.495580.

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Delay-tolerant networking (DTN) is an approach to computer network architecture that seeks to address the technical issues in heterogeneous networks that may lack continuous network connectivity. This Paper focus on distributed peer-to-peer file search in a delay tolerant network (DTN) formed by mobile devices, the holders of which exhibit certain social network properties. The proposal study is a P2P content-based file sharing system, namely Social Network Group (ESPOON), for disconnected MANETs. The system uses an interest extraction algorithm to derive a node’s interests from its video files for content-based file searching. It takes advantage of node mobility by delegating stable nodes, which have the most frequent video. In addition this work uses catch model and web services model used to video file share for mobile ad hoc network environments.In addition, the proposed cache approach maintains the user’s query in the cache database services.The proposed web services methods provides the client to client communication for video file sharing effectively.
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Liu, Hao Qiang, Shu Wen Zhao, and Jun Shang. "Research on Delay-Tolerant Network and Increasing Probability of Opportunistic Communication." Applied Mechanics and Materials 496-500 (January 2014): 2095–98. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.2095.

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At present, Internet has brought a lot of benefits to people. In most situations, it has an excellent performance. It requires a continuous end to end network for providing a reliable delivery. However, in reality, there is a challenged network which is discontinuous with high delay and many interruptions. In these cases, conventional network performs poorly or cannot be available. Delay-Tolerant Network (DTN) is an emerging area which is used to solve the problems in that challenged network. As its name described, it can handle or tolerant high delay which could lead to a disconnection that may be many hours or many days. It introduces a bundle protocol and uses a mechanism of store and forward to implement a hop to hop network which can operate in the discontinuous environment. It is used in terrestrial civilian networks, military wireless networks and outer space networks which have a high delay. The reference implementation has been developed by Delay-Tolerant Network Research Group (DTNRG). It implements a mature architecture of DTN and provides almost complete functions on Linux operating system. Later, the Bytewalla project implements part of DTN architecture and functions on Android operating systems. It is defective and there is much space to improve it. This research concerns that the Bluetooth convergence layer increases the probability of communication based on DTN.
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Das, Priyanka, Prosenjit Chowdhury, Bikash Poudel, and Tanmay De. "Fibonary Spray and Wait Routing in Delay Tolerant Networks." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 6 (2016): 3205. http://dx.doi.org/10.11591/ijece.v6i6.10361.

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<p>Although there has been a tremendous rise in places being connected through the Internet or any other network protocol, there still lie areas, which remain out of reach due to various reasons. For all such places the answer is a Delay Tolerant Network (DTN). A DTN is such a network where there is no fixed or predefined route for messages and no such guarantee whatsoever of all messages being correctly routed. DTN can be considered as a superset of networks wherein other networks such as adhoc, mobile, vehicular etc. form the subset. Therefore routing in DTN is a very chancy affair where one has to maximize on the present network scenarios to get any fruitful result other than depending on past information. Also protocols here need to be less complex and not increase the already high nodal overhead. In this paper we propose a new approach, the Fibonary Spray and Wait, which does exactly this. It forwards copies of a message in a modified Binary Spray and Wait manner so that it performs well even in non independent and identically distributed node structure. We have supported our statements with mathematical as well as simulation analysis.</p>
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Das, Priyanka, Prosenjit Chowdhury, Bikash Poudel, and Tanmay De. "Fibonary Spray and Wait Routing in Delay Tolerant Networks." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 6 (2016): 3205. http://dx.doi.org/10.11591/ijece.v6i6.pp3205-3216.

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<p>Although there has been a tremendous rise in places being connected through the Internet or any other network protocol, there still lie areas, which remain out of reach due to various reasons. For all such places the answer is a Delay Tolerant Network (DTN). A DTN is such a network where there is no fixed or predefined route for messages and no such guarantee whatsoever of all messages being correctly routed. DTN can be considered as a superset of networks wherein other networks such as adhoc, mobile, vehicular etc. form the subset. Therefore routing in DTN is a very chancy affair where one has to maximize on the present network scenarios to get any fruitful result other than depending on past information. Also protocols here need to be less complex and not increase the already high nodal overhead. In this paper we propose a new approach, the Fibonary Spray and Wait, which does exactly this. It forwards copies of a message in a modified Binary Spray and Wait manner so that it performs well even in non independent and identically distributed node structure. We have supported our statements with mathematical as well as simulation analysis.</p>
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Ta, Dominick, Stephanie Booth, and Rachel Dudukovich. "Towards Software-Defined Delay Tolerant Networks." Network 3, no. 1 (2022): 15–38. http://dx.doi.org/10.3390/network3010002.

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This paper proposes a Software-Defined Delay Tolerant Networking (SDDTN) architecture as a solution to managing large Delay Tolerant Networking (DTN) networks in a scalable manner. This work is motivated by the planned deployments of large DTN networks on the Moon and beyond in deep space. Current space communication involves relatively few nodes and is heavily deterministic and scheduled, which will not be true in the future. It is unclear how these large space DTN networks, consisting of inherently intermittent links, will be able to adapt to dynamically changing network conditions. In addition to the proposed SDDTN architecture, this paper explores data plane programming and the Programming Protocol-Independent Packet Processors (P4) language as a possible method of implementing this SDDTN architecture, enumerates the challenges of this approach, and presents intermediate results.
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Yang, Yun, Long Sheng Han, Ran Yan, Xiu Ping Kong, and Wen Chun Xu. "DTN Routing Mechanism Based on Area Dipartition." Advanced Materials Research 756-759 (September 2013): 851–54. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.851.

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Delay Tolerant Networks (DTN) has been widely used in challenge networks as an emerging network architecture. Among all studies , routing mechanism is the key problem in DTN. Because of high latency and low data rate, the traditional network routing algorithm can not apply to DTN. This paper proposed a DTN routing mechanism based on area dipartition. The mechanism divided the space into several regions, and calculated the probability of occurrence of each node in each region to determine data transfer path according to the probability. Finally, the simulation results show that the mechanism can significantly enhance the message delivery probability and reduce the packet loss rate.
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Rajashri Chaudhari. "Delay Tolerant Network Security: Enhanced Machine Learning Technique for Intrusion Detection System." Journal of Information Systems Engineering and Management 10, no. 1s (2024): 262–74. https://doi.org/10.52783/jisem.v10i1s.120.

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Delay tolerant networks (DTNs) are intended for effective communication between nodes over huge distances and they are resourceful in extreme conditions. DTN stores and forwards messages when the participant node is in the range. Hence, there is no restriction on end-to-end connectivity and data is transferred over adaptable links between the nodes. Since the network functions on coordination among participant nodes, an untrusted node can affect the coordination. Thus, DTNs are vulnerable to different kinds of attacks influencing the performance of the network. The delay in the transfer of data and unstable connectivity of nodes depends on effective coordination while the possibility of misbehaviour by relay nodes increases network vulnerability to various types of network attacks like packet dropping attacks, flooded attacks, DoS attacks, gray hole attacks, and black hole attack disturbing the network connectivity. Denial of service attacks (DoS) is a major concern in DTN that adversely affects the network. Attacks on DTN can interrupt message delivery and degrade performance. The study proposes the detection of such attacks over DTN with an efficient machine learning (ML) algorithm. The delay tolerant network is a wireless network that transfers information among nodes and is monitored for malicious nodes using a pre-trained ML model. The voting technique is used to enhance the performance of detection. The network attacks are detected with significant accuracy and efficient secure communication is established in the network. Furthermore, the network simulator NS2 is employed to simulate the prevention of malicious attacks in the proposed system. This simulator offers a versatile and customizable environment for modelling various DTN scenarios and assessing the effectiveness of intrusion detection systems in a controlled setting. Our proposed model offers better performance than existing DTN security techniques.
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Shaldit Sheni, J., K. Jayashree, and B. Fowzia Sihana. "Malicious Packet Loss Identification in Disruption Tolerant Network." Asian Journal of Computer Science and Technology 3, no. 1 (2014): 36–40. http://dx.doi.org/10.51983/ajcst-2014.3.1.1727.

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In recent days network is suffering serious problems with the packet loss. Dropping of received packets, even it has adequate buffers is very common in Disruption Tolerant Network. The DTN node facilitates communication between mobile nodes. Sometimes the mobile node selects the DTN with lowest reputation that affects packet delivery ratio. If there is a malicious node in the route, the data packet does not reach its destination. Repeatedly the misbehaving nodes may forge some records to avoid being spotted. To solve these issues we propose a scheme to limit the packet rolling in the direction of misbehaving node. The contact record preserves the previous performance of DTN and the mobile nodes select the best rated DTN for its communication. The record handler is maintained to keep track of incoming and outgoing packets. The witness nodes identify the real misbehaving node. The malicious node needs to be identified and is barred. The genuine packet loss, malicious packet loss are differentiated.
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S., Sekar, and C. Poongodi Dr. "OPTIMIZATION OF THROW BOX DEPLOYMENT IN DELAY TOLERANT NETWORK." International Journal of Computational Research and Development 3, no. 1 (2017): 68–75. https://doi.org/10.5281/zenodo.438626.

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Wireless communications have led to the emergence of wireless sensor networks (WSNs), which consist of a large number of sensing devices each capable of detecting, processing, and transmitting environmental information. Delay Tolerant Network (DTN) are designed to overcome limitations in connectivity due to conditions such as mobility, poor infrastructure, and short range radios. DTNs rely on the inherent mobility in the network to deliver packets around frequent and extended network partitions using a store-carry-and forward paradigm. The main goal of DTN is to provide interoperability between different kinds of networks in wide ranging versions and reliable transmission based on overlay network.Throw boxes are very effective in improving throughput and can also reduce data delivery delay. The improvement in throughput is generally more significant than improvement in delay. Throw boxes are most useful for routing algorithms that use multi-path routing and when nodes follow structured mobility patterns. Throw box deployment incorporates knowledge about contact opportunities performs better than deployment. Additionally, if deployment is customized to existing traffic patterns, the algorithms are more effective than assuming that traffic is equally distributed. In this method, these issues are considered, a set of greedy algorithms is proposed which it can efficiently provide quality of solution for challenging problems. To minimize the delivery delay, and to improve reliability in mobile DTN is by placing additional stationary nodes called throw boxes or greater number of contact opportunities with other nodes .This method also investigates the problem of throw box selection and deployment in order to reduce the running time in DTN.
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Dissertations / Theses on the topic "Tolerant network (DTN)"

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Ismailov, Alexej. "Network Monitoring in Delay Tolerant Network." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174053.

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A Disruption Tolerant Network (DTN) is a sparse network where connectivity is regulated by the proximity of mobile nodes. Connections are sporadic and the delivery rate is closely related to node movement. As network resources often are limited in such settings, it is useful to monitor the network in order to make more efficient communication decisions. This study investigates existing routing protocols and monitoring tools for DTN that best cope with the requirements of a tactical military network. A model is proposed to estimate source to destination delay in DTN. This model is evaluated in a Java-based software simulator called The ONE. In order to match the tactical military environment, two scenarios are constructed. The squad scenario simulates the formation movement pattern of several squads and the hierarchical communication scheme that is maintained in a military context. The other scenario simulates a convoy line movement of a military group during transportation. The results of this study show that the proposed mechanism can improve delivery rate and reduce network overhead in settings with strict buffer limitations. The estimation worked best in scenarios that contained some patterns of movement or communication. These patterns are resembled in the model's collected data and the model can provide the user with rough estimates of end-to-end delays in the network. Primary use of this model has been to reduce number of old messages in the network, but other applications like anomaly detection are also discussed in this work.<br>Ett avbrottstolerant nätverk (DTN) är ett glest nät där konnektiviteten avgörs av närheten bland de rörliga noderna i nätverket. Avbrotten i ett sådant nät förekommer ofta och sporadiskt. Eftersom nätverksresurserna oftast är begränsade i sådana sammanhang, så är det lämpligt att övervaka nätverket för att göra det möjligt att fatta mer effektiva kommunikationsbeslut. Det här arbetet undersöker olika routingalgoritmer och övervakningsvektyg för DTN med hänsyn till de krav som ställs av ett taktiskt nät. En modell för att uppskatta fördröjningen från källa till destination är framtagen i arbetet. Modellen är utvärderad med hjälp av en Javabaserad mjukvarusimulator som heter The ONE. För att bäst representera den miljö som uppstår i militära sammanhang är två scenarion framtagna. Det första är ett truppscenario där nodernar rör sig i fromationer och nättrafiken följer den hierarkiska modellen som används i militär kommunikation. Det andra scenariot är ett konvojscenario där enheter marcherar på led. Resultaten från denna studie visar att den föreslagna modellen kan öka andelen levererade meddelanden och minska nätverksbelastningen i en miljö där bufferstorleken hos noderna är begränsad. Uppskattningen visade sig fungera bäst i scenarion som innehöll någon form av mönster bland nodernas rörelse eller deras kommunikation. Dessa mönster återspeglas i modellens insamlade data och modellen kan förse användaren med en grov estimering av slutfördröjningen till alla destinationer i nätet. Modellen har i huvudsak använts till att minska antalet gamla meddelanden i nätet, men arbetet berör även andra användningsområden som anomalidetektion.
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Wyllie, James. "Standardized Bundle Agent Discovery on Delay/Disruption-Tolerant Networks." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1209155168.

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Baudic, Gwilherm. "HINT - from opportunistic network characterization to application development." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/17354/1/Baudic_Gwilherm.pdf.

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Delay Tolerant Networks are currently a promising alternative to infrastructure-based networks, but they have not seen a wide deployment so far. There are several ways to evaluate the performance of such networks: field trials, theoretical models, simulation, emulation or replaying contact datasets. Each one has its advantages and drawbacks in terms of material cost, realism, required time or ability to manage real nodes. However, none of them effectively addresses the needs of application developers. In this thesis, we will focus on emulation. In a first part, we will deal with possible inputs for such a system. We first propose an analytical model to predict the drop ratio in a network where nodes have a one-packet buffer. Then, taking inspiration from trace scaling approaches from the literature, we study the hypotheses and assumptions taken for real traces statistical analyses, showing their impact on the obtained probability distributions and observed network performance metrics. We then extend this study to the whole life cycle of real traces, by considering data collection, filtering and scaling. In a second part, we propose a possible architecture for a hybrid DTN emulator, using both real nodes as smartphones and virtual nodes. The main advantage here is to be able to evaluate real applications, including preexisting ones, in a DTN context, doing so as transparently as possible. We identify the limitations of existing approaches, which helps us build a list of specifications for our system. Then, we propose a system called HINT which matches these specifications. HINT is validated, and applied to the study of some examples.
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Lindner, Patricia J. "Bundle Security: Verifying Confidentiality and Integrity for the Interplanetary Overlay Network." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1554911833066868.

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Herbertsson, Fredrik. "Implementation of a Delay-Tolerant RoutingProtocol in the Network Simulator NS-3." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-63754.

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Small mobile devices with networking capabilities are becoming more and more readily available and used. These devices can be used to form mobile ad hoc networks to communicate, where no infrastructure for network communication exist or where it has been destroyed or is overloaded e.g. in a natural disaster such as a hurricane. Such networks are almost never fully connected, and are part of the category of delay/disruption-tolerant networks (DTN) and suffer from limited resources e.g. bandwidth, storage and limited energy supply. The Opportunistic DTN Routing With Window-aware Adaptive Replication (ORWAR) is a delaytolerant protocol intended to be used in disaster relief efforts or emergency operations were a DTN could be a fast way to establish communication. In these kinds of scenarios high success rate together with efficient usage of the networks resources are critical to the success of such operations. ORWAR has been implemented and simulated on a high-level simulator, with promising results. To make a better assessment about what ORWARs performance would be in a real world network, more realistic and detailed simulations are needed. This Master's Thesis describes the design, implementation and evaluation of ORWAR in the network simulator ns-3, which simulates networks down to physical layer. The contributions of this thesis is a extension to ns-3 giving it an framework with support for the bundle protocol and delay-tolerant routing protocols and an evaluation of the ORWAR performance using more detailed simulations. The simulations represent a city scenario in down-town Helsinki city, Finland, were pedestrians, cars and trams form a network to communicate. The simulations with a higher level of detail has added to insight about the protocol. The obtained results showed that the high-level simulation may be overly optimistic and hides implementation details. On the other hand, some assumptions were found to be too pessimistic. For example we have shown that ORWAR actually performs better than the high level simulations, with regard to partial transmissions and that the high-level simulations have rather optimistic assumptions regarding the latency.
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Kaviani, Mahzad. "Energy–aware forwarding strategies for delay tolerant networking (DTN) routing protocols." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/94744/1/Mahzad_Kaviani_Thesis.pdf.

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This research addresses efficient use of the available energy in resource constrained mobile sensor nodes to prevent early depletion of the battery and maximize the packet delivery rate. This research contributes two energy-aware enhancement strategies to improve the network lifetime and delivery probability for energy constrained applications in the delay-tolerant networking environment.
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Anzaldi, Davide. "ORWAR: a delay-tolerant protocol implemented on the Android platform." Thesis, Linköpings universitet, RTSLAB - Laboratoriet för realtidssystem, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-64088.

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The Aim of this thesis is to implement the "Opportunistic DTN Routing with Window-aware Adaptive Replication" (ORWAR) protocol on the Android platform.Delay-Tolerant Networks (DTNs) are particular mobile ad-hoc network (MANET) architectures that try to solve the issues related to the lack of point to point connectivity between the nodes of the network or between its sub-networks (partitions). The general approach is based on techniques of store-carry-forward of the messages whereby delivery can be achieved even in partitioned networks, though with mobility-dependent delays. DTNs can be considered as a means of communication for scenarios where infrastructure-based networks cannot be deployed or get dysfunctional for some reasons, such as in the case of a natural disaster or highly overloaded infrastructure. ORWAR is a DTN protocol that tries to exploit knowledge about the context of mobile nodes (speed, direction of movement and radio range) to estimate the size of a contact window in order to avoid the energy waste deriving from partial transmissions. This report presents the design and the implementation of the protocol on the Android platform. It then describes some functional tests together with an analysis of the energy consumption and the performance reachable on our test device Android Development Phone 1.
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Sastry, Nishanth Ramakrishna. "Social network support for data delivery infrastructures." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/240631.

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Network infrastructures often need to stage content so that it is accessible to consumers. The standard solution, deploying the content on a centralised server, can be inadequate in several situations. 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 content staging is infeasible. Our approach works by examining empirical traces to identify relevant social properties, and then exploits them. The first study looks at cost-effectively serving the ``Long Tail'' of rich-media user-generated content, which need to be staged close to viewers to control latency and jitter. Our traces show that a preference for the unpopular tail items often spreads virally and is localised to some part of the social network. Exploiting this, we propose Buzztraq, which decreases replication costs by selectively copying items to locations favoured by viral spread. We also design SpinThrift, which separates popular and unpopular content based on the relative proportion of viral accesses, and opportunistically spins down disks containing unpopular content, thereby saving energy. The second study examines whether human face-to-face contacts can efficiently create paths over time between arbitrary users. Here, content is staged by spreading it through intermediate users until the destination is reached. Flooding every node minimises delivery times but is not scalable. We show that the human contact network is resilient to individual path failures, and for unicast paths, can efficiently approximate flooding in delivery time distribution simply by randomly sampling a handful of paths found by it. Multicast by contained flooding within a community is also efficient. However, connectivity relies on rare contacts and frequent contacts are often not useful for data delivery. Also, periods of similar duration could achieve different levels of connectivity; we devise a test to identify good periods. We finish by discussing how these properties influence routing algorithms.
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Martínez, Tornell Sergio. "Delay Tolerant Networks for Efficient Information Harvesting and Distribution in Intelligent Transportation Systems." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/68486.

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[EN] Intelligent Transportation Systems (ITS) can make transportation safer, more efficient, and more sustainable by applying various information and communication technologies. One of these technologies are \acfp{VN}. \acp{VN} combine different communication solutions such as cellular networks, \acfp{VANET}, or IEEE 802.11 technologies to provide connectivity among vehicles, and between vehicles and road infrastructure. This thesis focuses on VNs, and considers that the high speed of the nodes and the presence of obstacles like buildings, produces a highly variable network topology, as well as more frequent partitions in the network. Therefore, classical \ac{MANET} protocols do not adapt well to VANETs. Under these conditions, \ac{DTN} have been proposed as an alternative able to cope with these adverse characteristics. In DTN, when a message cannot be routed to its destination, it is not immediately dropped but it is instead stored and carried until a new route becomes available. The combination of VN and DTN is called \acp{VDTN}. In this thesis, we propose a new VDTN protocol designed to collect information from vehicular sensors. Our proposal, called \ac{MSDP}, combines information about the localization obtained from a GNSS system with the actual street/road layout obtained from a Navigation System (NS) to define a new routing metric. Both analytical and simulation results prove that MSDP outperforms previous proposals. Concerning the deployment of VNs and VANET technologies, technology already left behind the innovation and the standardization phases, and it is about time it reach the first early adopters in the market. However, most car manufacturers have decided to implement VN devices in the form of On Board Units (OBUs), which are expensive, heavily manufacturer dependent, and difficult to upgrade. These facts are delaying the deployment of VN. To boost this process, we have developed the GRCBox architecture. This architecture is based on low-cost devices and enables the establishment of V2X, \emph{i.e.} V2I and V2V, communications while integrating users by easing the use of general purpose devices like smartphones, tablets or laptops. To demonstrate the viability of the GRCBox architecture, we combined it with a DTN platform called Scampi to obtain actual results over a real VDTN scenario. We also present several GRCBox-aware applications that illustrate how developers can create applications that bring the potential of VN to user devices.<br>[ES] Los sistemas de transporte inteligente (ITS) son el soporte para el establecimiento de un transporte más seguro, más eficiente y más sostenible mediante el uso de tecnologías de la información y las comunicaciones. Una de estas tecnologías son las redes vehiculares (VNs). Las VNs combinan diferentes tecnologías de comunicación como las redes celulares, las redes ad-hoc vehiculares (VANETs) o las redes 802.11p para proporcionar conectividad entre vehículos, y entre vehículos y la infraestructura de carreteras. Esta tesis se centra en las VNs, en las cuales la alta velocidad de los nodos y la presencia de obstáculos como edificios producen una topología de red altamente variable, así como frecuentes particiones en la red. Debido a estas características, los protocolos para redes móviles ad-hoc (MANETs) no se adaptan bien a las VANETs. En estas condiciones, las redes tolerantes a retardos (DTNs) se han propuesto como una alternativa capaz de hacer frente a estos problemas. En DTN, cuando un mensaje no puede ser encaminado hacia su destino, no es inmediatamente descartado sino es almacenado hasta que una nueva ruta esta disponible. Cuando las VNs y las DTNs se combinan surgen las redes vehiculares tolerantes a retardos (VDTN). En esta tesis proponemos un nuevo protocolo para VDTNs diseñado para recolectar la información generada por sensores vehiculares. Nuestra propuesta, llamada MSDP, combina la información obtenida del servicio de información geográfica (GIS) con el mapa real de las calles obtenido del sistema de navegación (NS) para definir una nueva métrica de encaminamiento. Resultados analíticos y mediante simulaciones prueban que MSDP mejora el rendimiento de propuestas anteriores. En relación con el despliegue de las VNs y las tecnologías VANET, la tecnología ha dejado atrás las fases de innovación y estandarización, ahora es el momento de alcanzar a los primeros usuarios del mercado. Sin embargo, la mayoría de fabricantes han decidido implementar los dispositivos para VN como unidades de a bordo (OBU), las cuales son caras y difíciles de actualizar. Además, las OBUs son muy dependientes del fabricante original. Todo esto esta retrasando el despliegue de las VNs. Para acelerar la adopción de las VNs, hemos desarrollado la arquitectura GRCBox. La arquitectura GRCBox esta basada en un dispositivo de bajo coste que permite a los usuarios usar comunicaciones V2X (V2V y V2I) mientras utilizan dispositivos de propósito general como teléfonos inteligentes, tabletas o portátiles. Las pruebas incluidas en esta tesis demuestran la viabilidad de la arquitectura GRCBox. Mediante la combinación de nuestra GRCBox y una plataforma de DTN llamada Scampi hemos diseñado y probado un escenario VDTN real. También presentamos como los desarrolladores pueden crear nuevas aplicaciones GRCBox para llevar el potencial de las VN a los dispositivos de usuario.<br>[CAT] Els sistemes de transport intel·ligent (ITS) poden crear un transport més segur, més eficient i més sostenible mitjançant l'ús de tecnologies de la informació i les comunicacions aplicades al transport. Una d'aquestes tecnologies són les xarxes vehiculars (VN). Les VN combinen diferents tecnologies de comunicació, com ara les xarxes cel·lulars, les xarxes ad-hoc vehiculars (VANET) o les xarxes 802.11p, per a proporcionar comunicació entre vehicles, i entre vehicles i la infraestructura de carreteres. Aquesta tesi se centra en les VANET, en les quals l'alta velocitat dels nodes i la presència d'obstacles, com els edificis, produeixen una topologia de xarxa altament variable, i també freqüents particions en la xarxa. Per aquest motiu, els protocols per a xarxes mòbils ad-hoc (MANET) no s'adapten bé. En aquestes condicions, les xarxes tolerants a retards (DTN) s'han proposat com una alternativa capaç de fer front a aquests problemes. En DTN, quan un missatge no pot ser encaminat cap a la seua destinació, no és immediatament descartat sinó que és emmagatzemat fins que apareix una ruta nova. Quan les VN i les DTN es combinen sorgeixen les xarxes vehicular tolerants a retards (VDTN). En aquesta tesi proposem un nou protocol per a VDTN dissenyat per a recol·lectar la informació generada per sensors vehiculars. La nostra proposta, anomenada MSDP, combina la informació obtinguda del servei d'informació geogràfica (GIS) amb el mapa real dels carrers obtingut del sistema de navegació (NS) per a definir una nova mètrica d'encaminament. Resultats analítics i mitjançant simulacions proven que MSDP millora el rendiment de propostes prèvies. En relació amb el desplegament de les VN i les tecnologies VANET, la tecnologia ha deixat arrere les fases d'innovació i estandardització, ara és temps d'aconseguir als primers usuaris del mercat. No obstant això, la majoria de fabricants han decidit implementar els dispositius per a VN com a unitats de bord (OBU), les quals són cares i difícils d'actualitzar. A més, les OBU són molt dependents del fabricant original. Tot això està retardant el desplegament de les VN. Per a accelerar l'adopció de les VN, hem desenvolupat l'arquitectura GRCBox. L'arquitectura GRCBox està basada en un dispositiu de baix cost que permet als usuaris usar comunicacions V2V mentre usen dispositius de propòsit general, com ara telèfons intel·ligents, tauletes o portàtils. Les proves incloses en aquesta tesi demostren la viabilitat de l'arquitectura GRCBox. Mitjançant la combinació de la nostra GRCBox i la plataforma de DTN Scampi, hem dissenyat i provat un escenari VDTN pràctic. També presentem com els desenvolupadors poden crear noves aplicacions GRCBox per a portar el potencial de les VN als dispositius d'usuari.<br>Martínez Tornell, S. (2016). Delay Tolerant Networks for Efficient Information Harvesting and Distribution in Intelligent Transportation Systems [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/68486<br>TESIS
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Castellazzi, Nicolò. "Sviluppo di un'applicazione di sincronizzazione file per reti challenged." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10658/.

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Questa tesi si pone l'obiettivo di implementare in ambiente Linux un'applicazione di sincronizzazione, chiamata DTNbox, che permetta lo scambio di file tra due nodi di una rete classificabile come Delay-/Disruption-Tolerant Network (DTN), ossia una rete in cui a causa di ritardi, interruzioni, partizionamento, non sia possibile utilizzare l'usuale architettura di rete TCP/IP. E' evidente che i problemi menzionati rendono estremamente più complessa la sincronizzazione fra cartelle rispetto ad Internet, da cui le peculiarità di DTNbox rispetto ad altre applicazioni in rete visto che, ad esempio, non è possibile la sincronizzazione tramite un nodo centrale, come in Dropbox e similari, ma occorre basarsi su comunicazioni peer-to-peer. L'oggetto della mia tesi si è quindi sviluppato principalmente su tre direzioni: • Implementare, utilizzando il linguaggio di programmazione C, le funzionalità previste dal nuovo progetto per Linux • Integrarne e modificarne le parti ritenute carenti, man mano che i test parziali ne hanno mostrato la necessità • Testarne il suo corretto funzionamento Si è deciso pertanto di dare precedenza alla scrittura delle parti fondamentali del programma quali i moduli di controllo, la struttura e gestione del database e lo scambio di messaggi tra due nodi appartenenti ad una rete DTN per poter arrivare ad una prima versione funzionante del programma stesso, in modo che eventuali future tesi possano concentrarsi sullo sviluppo di una interfaccia grafica e sull'aggiunta di nuovi comandi e funzionalità accessorie. Il programma realizzato è stato poi testato su macchine virtuali grazie all'uso dello strumento Virtualbricks.
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Books on the topic "Tolerant network (DTN)"

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Advances in Delay-Tolerant Networks (DTNs). Elsevier, 2015. http://dx.doi.org/10.1016/c2013-0-16374-x.

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Advances in Delay-Tolerant Networks (DTNs). Elsevier, 2021. http://dx.doi.org/10.1016/c2018-0-00632-5.

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Company, Hewlett-Packard. 2006 International Conference on Dependable Systems and Networks, 25-28 June 2006, Philadelphia, Pennsylvania: Proceedings: Dsn 2006. IEEE Computer Society Press, 2006.

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IEEE Computer Society. Dependable Systems and Networks (Dsn 2001)(Formerly Ftcs): 2001 International Conference on. Institute of Electrical & Electronics Enginee, 2001.

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IEEE Computer Society. Dependable Systems and Networks (Dsn 2001)(Formerly Ftcs): 2001 International Conference on. Institute of Electrical & Electronics Enginee, 2001.

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Book chapters on the topic "Tolerant network (DTN)"

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Rathee, Priyanka. "Semantics for Delay-Tolerant Network (DTN)." In Emerging Wireless Communication and Network Technologies. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0396-8_6.

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Gao, Weichao, Hengshuo Liang, James Nguyen, et al. "Emulation-Based Performance Evaluation of the Delay Tolerant Networking (DTN) in Dynamic Network Topologies." In Software Engineering Research, Management and Applications. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-24344-9_2.

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Manju, S., S. J. K. Jagadeesh Kumar, and V. R. Azhaguramyaa. "Performance Comparison of Intentional Caching Schemes in Disruption-Tolerant Networks (DTN)." In Advances in Intelligent Systems and Computing. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2471-9_26.

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Penning, Alvar, Lars Baumgärtner, Jonas Höchst, Artur Sterz, Mira Mezini, and Bernd Freisleben. "DTN7: An Open-Source Disruption-Tolerant Networking Implementation of Bundle Protocol 7." In Ad-Hoc, Mobile, and Wireless Networks. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31831-4_14.

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Joe, Inwhee, and Sang-Bo Kim. "A Message Priority Routing Protocol for Delay Tolerant Networks (DTN) in Disaster Areas." In Future Generation Information Technology. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17569-5_72.

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Elwhishi, Ahmed, Pin-Han Ho, K. Naik, and Basem Shihada. "A Novel Buffer Management Architecture for Epidemic Routing in Delay Tolerant Networks (DTNs)." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29222-4_31.

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Amaya-Tejera, Nazhir, Farid Meléndez-Pertuz, Rubén Sánchez-Dams, et al. "Evaluation of the Performance of Message Routing Protocols in Delay Tolerant Networks (DTN) in Colombian Scenario." In Communications in Computer and Information Science. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32475-9_36.

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Chen, Bor-Sen. "DNN-Based H∞ Decentralized Attack-Tolerant Team Formation Tracking Design of Large-Scale UAV Networked Control System under Time-Varying Delay and Interconnected Coupling." In Robust H∞ Team Formation Tracking Design Methods of Large-Scale UAV Networked Control Systems. CRC Press, 2024. http://dx.doi.org/10.1201/9781003545965-6.

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Singh, Vijander, Linesh Raja, Deepak Panwar, and Pankaj Agarwal. "Delay Tolerant Networks Architecture, Protocols, and Its Application in Vehicular Ad-Hoc Networks." In Advances in Social Networking and Online Communities. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-9096-5.ch008.

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Due to the high mobility of vehicular nodes in VANETs, there are high chances of partitions in the network. In such a situation, the protocols developed for VANETs cannot work well and an alternative network known as DTN (delay tolerant network) is capable enough to deal with VANET characteristics. The network which does not need any immediate data delivery and can wait for time and delivery of data is known as DTN. The concept of hold and forward the message is exploited by DTN. In this chapter, the authors are providing characteristics, architecture, and applications of delay tolerant vehicular ad-hoc networks.
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Morgenroth, J., W. B. Pöttner, S. Schildt, and L. Wolf. "Performance issues and design choices in delay-tolerant network (DTN) algorithms and protocols." In Advances in Delay-Tolerant Networks (DTNs). Elsevier, 2015. http://dx.doi.org/10.1533/9780857098467.2.225.

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Conference papers on the topic "Tolerant network (DTN)"

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Sreya, Killamsetty, Mylapilli RajyaLaxmi, Kakara Nireesha, Kella Pavan Kumar, and Ashapu Bhavani. "Review on Energy Consumption in Delay Tolerant Network (DTN)." In 2024 International Conference on IoT Based Control Networks and Intelligent Systems (ICICNIS). IEEE, 2024. https://doi.org/10.1109/icicnis64247.2024.10823141.

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Meng, Ke, Hui Zeng, Hongmei Deng, and Hongjun Li. "Delay/disruption-tolerant network (DTN) network management for space networking." In 2015 IEEE Aerospace Conference. IEEE, 2015. http://dx.doi.org/10.1109/aero.2015.7119086.

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Zhang, Qian, Zhigang Jin, Zhenjing Zhang, and Yantai Shu. "Network Coding for Applications in the Delay Tolerant Network (DTN)." In 2009 Fifth International Conference on Mobile Ad-hoc and Sensor Networks. IEEE, 2009. http://dx.doi.org/10.1109/msn.2009.68.

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Choudhari, Chinmay, and Deeplaxmi Niture. "Disruption Tolerant Network (DTN) for Space Communication: An Overview." In 2022 IEEE 7th International conference for Convergence in Technology (I2CT). IEEE, 2022. http://dx.doi.org/10.1109/i2ct54291.2022.9825432.

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Xia, Shuang, Zi-Jing Cheng, Chong Wang, and Yun-Feng Peng. "A Deliver Probability Routing for Delay Tolerant Networks (DTN)." In 2014 International Conference on Wireless Communication and Sensor Network. IEEE, 2014. http://dx.doi.org/10.1109/wcsn.2014.89.

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Tavares, Virgínia, Moacir Neto, Francisco Müller, and Aldebaro Klautau. "Delay/Disruption Tolerant Mesh Network Using LibreMesh and IBR-DTN." In XXXVIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais. Sociedade Brasileira de Telecomunicações, 2020. http://dx.doi.org/10.14209/sbrt.2020.1570643742.

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Shin-Ywan Wang. "Distributed interplanetary Delay/Disruption Tolerant Network (DTN) Monitor and Control system." In 2012 IEEE Aerospace Conference. IEEE, 2012. http://dx.doi.org/10.1109/aero.2012.6187107.

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Blanchet, Marc. "Postellation: an Enhanced Delay-Tolerant Network (DTN) Implementation with Video Streaming and Automated Network Attachment." In SpaceOps 2012. American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-1279621.

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Husni, Emir. "Rural Internet service system based on Delay Tolerant Network (DTN) using train system." In 2011 International Conference on Electrical Engineering and Informatics (ICEEI). IEEE, 2011. http://dx.doi.org/10.1109/iceei.2011.6021823.

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Trono, Edgar Marko, Yutaka Arakawa, Morihiko Tamai, and Keiichi Yasumoto. "DTN MapEx: Disaster area mapping through distributed computing over a Delay Tolerant Network." In 2015 Eighth International Conference on Mobile Computing and Ubiquitous Networking (ICMU). IEEE, 2015. http://dx.doi.org/10.1109/icmu.2015.7061063.

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