A Semi-Deterministic ChannelModel for VANETs Simulations

Jonathan Ledy (1) , Hervé Boeglen (2) , Anne-Marie Poussard (3) , Benoit Hilt (2) , Rodolphe Vauzelle (3)

1 SIC
2 MIPS - Modélisation, Intelligence, Processus et Système
3 XLIM - XLIM

Today's advanced simulators facilitate thorough studies on Vehicular Ad hoc NETworks (VANETs). However the choice of the physical layer model in such simulators is a crucial issue that impacts the results. A solution to this challenge might be found with a hybridmodel. In this paper, we propose a semi-deterministic channel propagation model for VANETs called UM-CRT. It is based on CRT (Communication Ray Tracer) and SCME--UM (Spatial ChannelModel Extended--UrbanMicro) which are, respectively, a deterministic channel simulator and a statistical channelmodel. It uses a process which adjusts the statistical model using relevant parameters obtained from the deterministic simulator. To evaluate realistic VANET transmissions, we have integrated our hybrid model in fully compliant 802.11 p and 802.11 n physical layers. This framework is then used with the NS-2 network simulator. Our simulation results show that UM-CRT is adapted for VANETs simulations in urban areas as it gives a good approximation of realistic channel propagation mechanisms while improving significantly simulation time.

Domaines: Réseaux et télécommunications [cs.NI]

Jonathan Ledy, Hervé Boeglen, Anne-Marie Poussard, Benoit Hilt, Rodolphe Vauzelle. A Semi-Deterministic ChannelModel for VANETs Simulations. International Journal of Vehicular Technology, 2012, pp.1-8. ⟨10.1155/2012/492105⟩. ⟨hal-00851951⟩