A packing model to estimate VANET capacity

Giang, Anh Tuan; Busson, Anthony; Gruyer, Dominique; Lambert, Alain

doi:10.1109/iwcmc.2012.6314363

Cited by 11 publications

(6 citation statements)

References 8 publications

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“…In References [17][18][19], the authors investigated the maximum density of successful simultaneous transmitters in VANETs, but did not take the interference into account in the transmission. In References [20][21][22][23][24], the authors proposed the estimation of network capacity in VANETs by considering the impacts of interference. However, in these studies, all data-packets are assumed to hold the same priority, and the task of modeling EDCA is simplified as carrier sense multiple access with collision avoidance (CSMA/CA) which cannot really evaluate the performance of the network.…”

Section: Related Workmentioning

confidence: 99%

Transmission Capacity Characterization in VANETs with Enhanced Distributed Channel Access

Liu

Huang

et al. 2019

Electronics

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The traditional research on the capacity of the Vehicular Ad Hoc Networks (VANETs) mainly lacks realistic models mimicking the behaviors of vehicles and the MAC protocol applied by IEEE 802.11p. To overcome these drawbacks, in this paper, the network transmission capacity analysis for VANETs is carried out from the perspective of the spatial geometric relationship among different vehicles. Specifically, the transmission scheme in this system is set to mimic enhanced distributed channel access (EDCA) protocol, in which the division of priorities is taken into account both the data type and the transmission distance requirement. Meanwhile, the moving pattern of vehicles is described as the classic car-following model according to realistic characteristics of VANET, and the propagation channel is modeled as a combination of large-scale path-loss and small-scale Rayleigh fading. Based on this model, the transmission opportunity under EDCA protocol is quantified and compared with that of CSMA/CA, and then the outage probability is calculated under the worst interfered scenario. Finally, the transmission capacity is thereby calculated and verified by the simulation results.

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Section: Related Workmentioning

confidence: 99%

Transmission Capacity Characterization in VANETs with Enhanced Distributed Channel Access

Liu

Huang

et al. 2019

Electronics

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“…Moreover, it is interesting to find out that, when the node density is high, the ER arrangement in VANETs is identical to the classic Rényi's packing problem [10], [11], which focused on how many segments with identical length can be put in an interval under the constraint that the centers of these segments cannot be covered by another segment. Based on the results of [10], the expected number of concurrent transmitting node pairs on a line segment with length L N can be estimated as γL N /(2r E ) (γ is a constant with approximate value 1.4952), when L N is relatively large.…”

Section: Capacity Characteristicsmentioning

confidence: 99%

Interference-Based Capacity Analysis for Vehicular Ad Hoc Networks

Pan

Cai

et al. 2015

IEEE Commun. Lett.

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Although some scaling law-based studies have been conducted for describing the asymptotic capacity of Vehicular Ad Hoc Networks (VANETs), the obtained results are not easy to be directly used for estimating the actual capacity of a communication link or the entire network. To overcome this drawback, an interference-based capacity analysis is carried out in this letter for the abstracted 1-dimensional VANETs scenario. For a reasonable and tractable modeling, the classic Car-Following model is applied to represent the dynamic change of the inter-vehicle distance, which strongly affects the power decay of both the signal and interference in the network. Based on that, a series of probability characteristics is derived for the worst-case interfering scenario, which finally leads to the stochastic characteristics for both the link and network capacity.

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“…In [11,12], an estimation of the number of simultaneous transmitters are proposed. The idea is thus similar to this paper.…”

Section: Related Workmentioning

confidence: 99%

Modeling and optimization of CSMA/CA in VANET

2014

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International audienceIn this paper, we propose a simple theoretical model to compute the maximum spatial reuse feasible in a VANET. We focus on the ad hoc mode of the IEEE 802.11p standard. Our model offers simple and closed-form formulas on the maximum number of simultaneous transmitters, and on the distribution of the distance between them. It leads to an accurate upper bound on the maximum capacity. In order to validate our approach, results from the analytical models are compared to simulations performed with the network simulator NS-3. We take into account different traffic distributions (traffic of vehicles), and study the impact of this traffic on capacity. An application of this work is the parameterization of the CSMA/CA mechanism. Such an optimization is developed at the end of this paper

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A packing model to estimate VANET capacity

Cited by 11 publications

References 8 publications

Transmission Capacity Characterization in VANETs with Enhanced Distributed Channel Access

Transmission Capacity Characterization in VANETs with Enhanced Distributed Channel Access

Interference-Based Capacity Analysis for Vehicular Ad Hoc Networks

Modeling and optimization of CSMA/CA in VANET

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