Cross Fertilization Between Wireless Testbeds and NS-3 Simulation Models
Résumé
Network simulators are ooen used for their simplicity and cost regarding wireless networks. However, their realism is ooen criticized and their results challenged. e main concern comes from the modeling of the PHY and MAC layers. To assess the performances of these simulators and their models, the results of simulations are ooen compared with experimental results. However, the comparison methodolo-gies used in these studies may introduce biases. is work focuses on accurately discovering and analyzing the reasons for the calibration problems or implementation bugs in sim-ulators and experimental devices. For this purpose, we leverage the famous Root Cause Analysis (RCA) technique for comparing traces issued from diierent simulations and real experiments, that includes the study of the root causes of dis-similarities. roughout the paper, our RCA-based method has been applied to detect and analyze a performance anomaly between NS-3 simulation and our lab wireless testbed when transmiiing data over a WIFI 802.11 link. It especially details how low level traac traces have been generated in both environments for similar scenarios, and how they can accurately be compared and their diierences analyzed. ACM Reference format:
Origine : Fichiers produits par l'(les) auteur(s)
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