We discuss the accuracy of a mechanism, called Oracle, to assess position and transmission ranges in VANET. We prove that, in the best case, the assessments of the oracle are exact. Moreover, we prove that the average case of the Oracle coincides with its best case. Therefore the Oracle is optimal. The errors that afflict the assessments of both the positions and the transmission ranges depend on the relative speeds between the vehicles. We prove that the distribution of those relative speeds is an unimodal distribution peaked in zero. We show and briefly discuss the results of several experiments we made, that fully confirmed our theoretical results.
Optimal Assessments in VANET: The Oracle
AMOROSO, ALESSANDRO;MARFIA, GUSTAVO;ROCCETTI, MARCO
2010
Abstract
We discuss the accuracy of a mechanism, called Oracle, to assess position and transmission ranges in VANET. We prove that, in the best case, the assessments of the oracle are exact. Moreover, we prove that the average case of the Oracle coincides with its best case. Therefore the Oracle is optimal. The errors that afflict the assessments of both the positions and the transmission ranges depend on the relative speeds between the vehicles. We prove that the distribution of those relative speeds is an unimodal distribution peaked in zero. We show and briefly discuss the results of several experiments we made, that fully confirmed our theoretical results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
