Análise de Desempenho do IEEE 802.11p: Simulações versus Experimentos Reais
ResumoThe employment of IEEE 802.11p compliant devices in the automotive environment is considered a crucial factor to leverage traffic safety and efficiency, which makes it critical to evaluate this standard before it is fully integrated with real systems. However, due to the high cost and the low supply of commercial devices, most of the work involving VANETs (Vehicular Ad-hoc NETworks) is still carried out only with simulations. In order to investigate possible equivalences, this work investigates the results of real measurements involving V2I (Vehicle-to-Infrastructure) and V2V (Vehicle-to-Vehicle) scenarios. For this, results obtained using OBUs (On-Board Units) and RSUs (Road-Side Units) were compared with those obtained by the NS-3 simulator. Three metrics were evaluated: the maximum reach, the packet delivery rate and the packet inter-reception time. The influence of different types of modulation allowed in the IEEE 802.11p standard and of several mobility patterns were also analyzed. This work represents a reference for the complete integration of this standard, and contributes to the validation and evolution of the current simulation models.
ALMEIDA, Thales T.; GOMES, Lucas de C.; ORTIZ, Fernando M.; JÚNIOR, José Geraldo R.; COSTA, Luís Henrique M. K.. Análise de Desempenho do IEEE 802.11p: Simulações versus Experimentos Reais. In: SIMPÓSIO BRASILEIRO DE REDES DE COMPUTADORES E SISTEMAS DISTRIBUÍDOS (SBRC) , 2018 Anais do XXXVI Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos. Porto Alegre: Sociedade Brasileira de Computação, may 2018 . ISSN 2177-9384.