Asymptotic throughput capacity analysis of VANETs exploiting mobility diversity

Wang, Miao, Shan, Hangguan, Luan, Tom H., Lu, Ning, Zhang, Ran, Shen, Xuemin and Bai, Fan 2015, Asymptotic throughput capacity analysis of VANETs exploiting mobility diversity, IEEE transactions on vehicular technology, vol. 64, no. 9, pp. 4187-4202, doi: 10.1109/TVT.2014.2363791.

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Title Asymptotic throughput capacity analysis of VANETs exploiting mobility diversity
Author(s) Wang, Miao
Shan, Hangguan
Luan, Tom H.
Lu, Ning
Zhang, Ran
Shen, Xuemin
Bai, Fan
Journal name IEEE transactions on vehicular technology
Volume number 64
Issue number 9
Start page 4187
End page 4202
Total pages 16
Publisher IEEE
Place of publication Piscataway, N. J.
Publication date 2015-09
ISSN 0018-9545
Keyword(s) Asymptotic throughout capacity
Mobility diversity
Packet-forwarding scheme
Vehicular ad hoc network
Summary Vehicular ad hoc networks (VANETs) rely on intervehicle relay to extend the communication range of individual vehicles for message transmissions to roadside units (RSUs). With the presence of a large number of quickly moving vehicles in the network, the end-to-end transmission performance from individual vehicles to RSUs through intervehicle relaying is, however, highly unreliable due to the violative intervehicle connectivity. As an effort toward this issue, this paper develops an efficient message routing scheme that can maximize the message delivery throughput from vehicles to RSUs. Specifically, we first develop a mathematical framework to analyze the asymptotic throughput scaling of VANETs. We demonstrate that in an urban-like layout, the achievable uplink throughput per vehicle from vehicle to RSUs scales as Θ(1/ log n) when the number of RSUs scales as Θ(n/log n) with n denoting vehicle population. By noting that the network throughput is bottlenecked by the unbalanced data traffic generated by hotspots of realistic urban areas, which may overload the RSUs nearby, a novel packet-forwarding scheme is proposed to approach the optimal network throughput by exploiting the mobility diversity of vehicles to balance the data traffic across the network. Using extensive simulations based on realistic traffic traces, we demonstrate that the proposed scheme can improve the network throughput approaching the asymptotic throughput capacity.
Language eng
DOI 10.1109/TVT.2014.2363791
Field of Research 080503 Networking and Communications
Socio Economic Objective 970108 Expanding Knowledge in the Information and Computing Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, IEEE
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