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On the Routing Problem in Disconnected Vehicular Ad-hoc Networks
Wisitpongphan, N.; Fan Bai; Mudalige, P.; Tonguz, O.K.;
INFOCOM 2007. 26th IEEE International Conference on Computer Communications. IEEE
6-12 May 2007
Page(s):2291
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2295
Abstract:
Vehicular ad hoc wireless network (VANET) exhibits a bipolar behavior in terms of network topology: fully connected topology with high traffic volume or sparsely connected topology when traffic volume is low. In this work, we develop a statistical traffic model based on the data collected on 1-80 freeway in California in order to study key performance metrics of interest in disconnected VANETs, such as average re-healing time (or the network restoration time). Our results show that, depending on the sparsity of vehicles, the network re-healing time can vary from a few seconds to several minutes. This suggests that, a new ad hoc routing protocol will be needed as the conventional ad hoc routing protocols such as dynamic source routing (DSR) and ad hoc on-demand distance vector routing (AODV) will not work with such long re-healing times.
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