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Effects of a Realistic Channel Model On Packet Forwarding in Vehicular Ad Hoc Networks

Torrent-Moreno, Marc; Schmidt-Eisenlohr, Felix; Füßler, H.; Hartenstein, Hannes


The discrepancy between real-world radio channel behavior and its standard modeling in simulations (Unit Disk Graph) is a major reason for protocols to perform different -often worse- than predicted when deployed in a real-world setup. As researchers having to deal with real ad hoc networks are aware of, assuming a fixed border for a node's communication range might not only lead to inaccurate results but also to a wrong judgment on the comparison between different protocols. We have set up a simulation study to investigate the effects of realistic channel characteristics on packet forwarding strategies for vehicular ad hoc networks. The contributions of this paper are threefold: i) We provide a performance evaluation of various routing/forwarding strategies under the realistic non-deterministic Nakagami radio propagation model and compare the results with the ones obtained using the standard Two-Ray-Ground model. Validated German highway movement patterns are used to model node mobility. ii) We demonstrate that realistic channel conditions present an opportunity and not only a drawback for some forwarding strategies. More specifically, we show that for contention-based forwarding (CBF) techniques, realistic channel characteristics provide a positive impact in terms of an increased average hop distance. ... mehr

DOI: 10.1109/WCNC.2006.1683495
Zitationen: 36
Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2006
Sprache Englisch
Identifikator ISBN: 1-4244-0269-7
KITopen-ID: 1000004171
Erschienen in Proceedings of the Wireless Communications and Networking Conference (WCNC), Las Vegas, Nevada, USA, 3rd - 6th April 2006
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Nachgewiesen in Dimensions
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