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In the last decade vehicular communications have been the focus of research, not only by the related scientific community but also by the automotive industry. Several architectures were proposed in order to overcome some issues found in such networks. Vehicular Delay-Tolerant Networks (VDTNs) try to improve vehicular communications by deploying the Delay-Tolerant Networks (DTNs) store-carry-and-forward...
Vehicular Delay-Tolerant Networks (VDTNs) were proposed as a solution to overcome some issues found in other vehicular technologies. VDTNs assume the bundle layer placement under the network layer. This vehicular architecture can be applied in sparse regions characterized by sparse connectivity, long propagation delays, high error rates, and short contact durations. Although some of the major issues...
Vehicular delay-tolerant networks (VDTN) assumes the use of the delay-tolerant network (DTN) concept for vehicular communications in order to cope several issues, such as highly dynamic network topology, short contact durations, disruption, intermittent connectivity, variable node density, and frequent network fragmentation. These challenging characteristics of vehicular networks affect the design...
Vehicular Delay-Tolerant Networks (VDTNs) were proposed as a novel disruptive networks based on the delay tolerant networking (DTN) paradigm. VDTN architecture uses vehicles to relay data, enabling network connectivity in challenging scenarios. This architecture uses the store-carry-and-forward parading allowing messages reaching their destination by hopping over nodes. This paper presents an evaluation...
Vehicular Delay-Tolerant Networks (VDTNs) use vehicles to transfer data between nodes, enabling network connectivity in sparse or partitioned opportunistic networks, where the low node density contributes to an absence of end-to-end links. By implementing a DTNs store-carry-and-forward paradigm, VDTNs allow delay-tolerant data traffic from a variety of vehicular applications to be routed over time,...
This paper analyses the performance of a new routing protocol for vehicular delay-tolerant networks, called GeoSpray. This geographic routing protocol performs a store-carry-and-forward, combining replication and forwarding/ routing decisions based on location information, with explicit delivery acknowledgments to improve network resources utilization. The performance of the proposed routing protocol...
As an application of the concept of delay-tolerant network (DTN) for vehicular communications, the vehicular delay-tolerant network (VDTN) architecture was proposed to cope with issues, such as highly dynamic network topology, short contact durations, disruption, intermittent connectivity, variable node density, and frequent network fragmentation. These challenging characteristics of vehicular networks...
Vehicular Delay-Tolerant Network (VDTN) is a new disruptive network architecture where vehicles act as the communication infrastructure, furnishing low-cost asynchronous opportunistic communications, variable delays and bandwidth limitations defining a non-TCP/IP (Transmission Control Protocol/Internet Protocol) network. A VDTN assumes asynchronous, bundle-oriented communication, and a store-carry-and-forward...
Vehicular communications emerged as a modern alternative to increase road traffic safety and also promote, through technologies, the development of applications and services to the travelers. In this context, Vehicular Delay Tolerant Networks (VDTNs) arise as innovative solution since it presents an appropriate network architecture, supporting communication in intermittent situations. This work presents...
Vehicular Delay-Tolerant Networks use the delay-tolerant architecture and protocols to overcome the disruptions in network connectivity. These concepts help in cases where the network is sparse or with large variations in density or there is no end-to-end connectivity, by providing a communications solution for non real-time applications. This paper presents data fragmentation techniques to optimize...
The Vehicular Delay-Tolerant Networks (VTDN) project proposed a novel architecture for VDTN. Besides positioning the bundle layer below the network layer, it employs out-of-band signaling and devises the separation of the control plane and data plane. A laboratory prototype was created to demonstrate this approach. The project also developed new applications, fragmentation mechanisms, content storage...
Many investments are being made in vehicular networking due to social and technological benefits that comes with the development of services and applications for the community, including safety issues. Vehicular Delay-Tolerant Networks (VDTNs) appear as innovative network architecture, able to outline communication challenges caused by issues like variable delays, disruption and intermittent connectivity...
Vehicular Delay-Tolerant Networks (VDTNs) use vehicles to carry data between network nodes, enabling network connectivity in sparse or partitioned opportunistic networks, where the node density is not high enough to establish end-to-end links. By implementing a store-carry-and-forward paradigm, VDTNs allow delay-tolerant data traffic from a variety of vehicular applications to be routed over time,...
Vehicular Delay-Tolerant Networks (VDTNs) aim to provide non-real time services and applications, such as electronic mail or file transfer, in environments with sparse and intermittent connectivity, variable delays, or where an end-to-end connection may not exist. Gathering contributions from opportunistic and cooperative networks, VDTN tries to generalize the delay-tolerant networks concept and apply...
Vehicular Delay-Tolerant Networking (VDTN) is a Delay-Tolerant Network (DTN) based architecture concept for transit networks, where vehicles movement and their bundle relaying service is opportunistically exploited to enable non-real time applications, under environments prone to connectivity disruptions, network partitions and potentially long delays. In VDTNs, network resources may be limited, for...
Developing an adequate network architecture for supporting data communications in vehicular networks is critical to overcome the challenges caused by highly dynamic network topology, connectivity disruption, and intermittent connectivity issues. Among several approaches available in the related literature to address these problems, vehicular delay-tolerant networks (VDTNs) appear as a recent and innovative...
Vehicular Delay-Tolerant Networking (VDTN) is a disruptive network architecture based on the concept of delay tolerant networks (DTNs). VDTNs handle non-real time applications using vehicles to carry bundles, relaying them only when a proper contact opportunity occurs. Therefore, the network performance is directly affected by the storage capacity and message retrieving of intermediate nodes. This...
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