By Mohamed Kassab, Marion Berbineau, Alexey Vinel, Magnus Jonsson, Fabien Garcia, José Soler
This e-book constitutes the court cases of the eighth overseas Workshop on conversation applied sciences for autos, Nets4Cars/Nets4Trains/Nets4Aircraft 2015, held in Sousse, Tunisia, in may perhaps 2015. The 20 papers awarded during this quantity have been rigorously reviewed and chosen from 27 submissions. The contributions are equipped in topical sections named: highway; rail; and air.
Read or Download Communication Technologies for Vehicles: 8th International Workshop, Nets4Cars/Nets4Trains/Nets4Aircraft 2015, Sousse, Tunisia, May 6-8, 2015. Proceedings PDF
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Additional resources for Communication Technologies for Vehicles: 8th International Workshop, Nets4Cars/Nets4Trains/Nets4Aircraft 2015, Sousse, Tunisia, May 6-8, 2015. Proceedings
C Springer International Publishing Switzerland 2015 M. Kassab et al. ): Nets4Cars/Nets4Trains/Nets4Aircraft 2015, LNCS 9066, pp. 35–46, 2015. 1007/978-3-319-17765-6_4 36 S. Bindel, S. Chaumette, and B. Hilt Historically only the number of hops was taking into account, without considering the link quality. That is why in wireless environments, metrics like ETX based on link observation give better performances, especially about the packet delivery ratio . Some routing protocols for VANETs (subset of MANETs) such as OLSR (Optimized Link State Routing Protocol)  maintain a global topology view to compute the best path.
Unlike disruptions, this event is not detected by the static window used by the classical ETX. Despite the dr window marks expected packets as lost, the ETXl formula (see equation 2) needs to have signiﬁcantly losses in windows for df and dr to change its estimation. But with the dynamic window the changing to an unidirectional link is detected. Like the disruption case the detection takes 4 seconds. Fig. 4. Classical and enhanced ETXl comparison Our enhanced metric based on dynamic window size is clearly more reactive and sensitive.
2 df and dr Computation These ratios are computed by sending broadcast probe packets at an average period τ . 1τ per probe to avoid synchronization. A node receiving a probe must rebroadcast it and allows for the originator of a probe to compute the dr probability. This feature is native for wireless mesh nodes but must be implemented for ad hoc nodes. Besides, a mechanism to avoid a broadcast storm due to the rebroadcasting of probe packets is mandatory. Finally, nodes are using a windowing mechanism to compute the df and dr probabilities.
Communication Technologies for Vehicles: 8th International Workshop, Nets4Cars/Nets4Trains/Nets4Aircraft 2015, Sousse, Tunisia, May 6-8, 2015. Proceedings by Mohamed Kassab, Marion Berbineau, Alexey Vinel, Magnus Jonsson, Fabien Garcia, José Soler