A packing model to estimate VANET capacity

Abstract : In IEEE 802.11p VANET networks the transmission scheduling is distributed and asynchronous. The number of simultaneous transmitters is thus closely related to the CSMA/CA mechanism which limits the spatial reuse of the channel. The capacity is bounded by a constant $C$ whatever the number of nodes and the type of routing schemes. This paper aims to evaluate the spatial reuse of a VANET (using CSMA/CA) and to deduce its maximum capacity. The proposed model is an extension of a classical \textit{packing problem}. We prove formally that the intensity of the maximum number of simultaneous transmitters (the maximal spatial reuse) converges to a constant and propose a simple estimate of this constant. Realistic simulations show that the theoretical capacity offers a very tight bound on the real capacity of the network.
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https://hal-supelec.archives-ouvertes.fr/hal-00728014
Contributor : Anthony Busson <>
Submitted on : Tuesday, September 4, 2012 - 4:27:22 PM
Last modification on : Friday, October 26, 2018 - 4:42:11 PM

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  • HAL Id : hal-00728014, version 1

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Anh Tuan Giang, Anthony Busson, Alain Lambert, Dominique Gruyer. A packing model to estimate VANET capacity. IWCMC 2012, Aug 2012, Chypre, Cyprus. pp.1-6. ⟨hal-00728014⟩

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