Measuring the capacity of in-car to in-car vehicular networks

Rubinstein, Marcelo G.; Abdesslem, Fehmi Ben; Amorim, Marcelo Dias de; Cavalcanti, Saavio Rodrigues; Alves, Rafael dos Santos; Costa, Luís Henrique M. K.; Duarte, Otto Carlos Muniz Bandeira; Campista, Miguel Elias M.

doi:10.1109/mcom.2009.5307476

Cited by 52 publications

(28 citation statements)

References 9 publications

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“…The DTN concepts are useful as vehicular networks are characterized by scarce transmission opportunities and intermittent connectivity, particularly in rural or mountainous areas. A recent study [44] shows that the duration of contacts between cars using IEEE 802.11g crossing at 20 Km/h is about 40 s, at 40 Km/h is about 15 s and at 60 Km/h is about 11 s. If TCP is used at 60 Km/h, the goodput is very low (average of 80 KB) and in 4 out of 10 experiments no data was transferred at all. UDP gives better results, with about 2 MB transferred in a contact at 60 Km/h.…”

Section: Vehicular Delay-tolerant Networkmentioning

confidence: 99%

From Delay-Tolerant Networks to Vehicular Delay-Tolerant Networks

Pereira

Casaca

Rodrigues

et al. 2012

IEEE Commun. Surv. Tutorials

207

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Abstract-This paper provides an introductory overview of Vehicular Delay-Tolerant Networks. First, an introduction to Delay-Tolerant Networks and Vehicular Delay-Tolerant Networks is given. Delay-Tolerant schemes and protocols can help in situations where network connectivity is sparse or with large variations in density, or even when there is no end-to-end connectivity by providing a communications solution for non realtime applications. Some special issues like routing are addressed in the paper and an introductory description of applications and the most important projects is given. Finally, some research challenges are discussed and conclusions are detailed.

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Section: Vehicular Delay-tolerant Networkmentioning

confidence: 99%

From Delay-Tolerant Networks to Vehicular Delay-Tolerant Networks

Pereira

Casaca

Rodrigues

et al. 2012

IEEE Commun. Surv. Tutorials

207

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show abstract

“…In both scenarios, mobile nodes move with different velocities. Parallel with a study based on a testbed composed by real vehicles [51], and assuming a scale of 1:50 (1 m in the laboratory testbed represents 50 m in a real scenario), Mobile node 1 moves at 48 km/h, mobile node 2 at 40 km/h, mobile 3 at 36 km/h, and mobile node 4 at 24 km/h. Relay nodes are placed on roads intersections.…”

Section: Network Scenariosmentioning

confidence: 99%

Performance assessment of IP over vehicular delay-tolerant networks through the VDTN@Lab testbed

Dias

Isento

Silva

et al. 2012

J Wireless Com Network

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Vehicular delay-tolerant network (VDTN) is a network architecture based on the delay-tolerant network paradigm, which was designed to provide low-cost asynchronous vehicular communications in environments with disruptions, intermittency, variable delays, and network partition. This article proposes a laboratory testbed for VDTNs, called VDTN@Lab. It aims to support research studies related with the design, emulation, performance evaluation, and diagnose of new VDTN protocols, services, and applications. It intends to demonstrate the applicability of VDTNs over multiple application environments. VDTN@Lab features an emulation capability, allowing live experiments with prototyped hardware and software embedded into robotic cards, desktop, and netbooks computers. The proposed prototype is demonstrated and evaluated with Epidemic, and Spray, and Wait routing protocols, using different combinations of scheduling and dropping policies, in scenarios with different vehicular mobility models (bus movement and random movement across roads).

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“…In addition, these mobile nodes move at different speeds, emulating average velocities about 48, 40, 36 and 24 km/h. These values were obtained taking into account the information gathered from a study performed by real vehicles [26]. In parallel, it is assumed a scale of 1:50 (1 m at the laboratory testbed represents 50 m in a real scenario).…”

Section: Vdtn@lab Testbedmentioning

confidence: 99%

Performance assessment of fragmentation mechanisms for vehicular delay-tolerant networks

Dias

Rodrigues

Isento

et al. 2011

J Wireless Com Network

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Vehicular Delay-Tolerant Networks (VDTNs) are a new approach for vehicular communications where vehicles cooperate with each other, acting as the communication infrastructure, to provide low-cost asynchronous opportunistic communications. These communication technologies assume variable delays and bandwidth constraints characterized by a non-transmission control protocol/internet protocol architecture but interacting with it at the edge of the network. VDTNs are based on the principle of asynchronous communications, bundle-oriented communication from the DTN architecture, employing a store-carry-and-forward routing paradigm. In this sense, VDTNs should use the tight network resources optimizing each opportunistic contact among nodes. Given the limited contact times among nodes, fragmentation appears as a possible solution to improve the overall network performance, increasing the bundle delivery probability. This article proposes the use of several fragmentation approaches (proactive, source, reactive, and toilet paper) for VDTNs. They are discussed and evaluated through a laboratory testbed. Reactive and toilet paper approaches present the best results. It was also shown that only the source fragmentation approach presents worst results when compared with non-fragmentation approaches.

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Measuring the capacity of in-car to in-car vehicular networks

Cited by 52 publications

References 9 publications

From Delay-Tolerant Networks to Vehicular Delay-Tolerant Networks

From Delay-Tolerant Networks to Vehicular Delay-Tolerant Networks

Performance assessment of IP over vehicular delay-tolerant networks through the VDTN@Lab testbed

Performance assessment of fragmentation mechanisms for vehicular delay-tolerant networks

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