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Open AccessFeature PaperArticle

Wi-Fi Direct Performance Evaluation for V2P Communications

1
Federal University of Rio de Janeiro—UFRJ—PEE/COPPE-DEL/Poli-GTA, Av. Athos da Silveira Ramos 149, Rio de Janeiro 21941-972, Brazil
2
Federal Center for Technological Education of Minas Gerais—CEFET-MG—DCMLP, R. José Péres 558, Leopoldina 36700-001, Brazil
*
Author to whom correspondence should be addressed.
J. Sens. Actuator Netw. 2020, 9(2), 28; https://doi.org/10.3390/jsan9020028
Received: 3 April 2020 / Revised: 8 May 2020 / Accepted: 1 June 2020 / Published: 6 June 2020
(This article belongs to the Special Issue Wireless Technologies Applied to Connected and Automated Vehicles)
The high cost of IEEE 802.11p-compliant devices and the lack of a widely adopted standard motivate the search for alternative methods for vehicular communication. As a consequence, and due to the ubiquity of smartphones, we see an increasing number of proposals based on Wi-Fi Direct, especially related to the integration of pedestrians in VANETs. Nevertheless, given the complexity of real experimentation, it is difficult to assess the ability of Wi-Fi Direct to offer connectivity in the vehicular environment on a large scale, leading to the evaluation through simulation. In order to verify the ability of a simulation model of reproducing the Wi-Fi Direct behavior, we analyze the performance of a safety application based on the communication range, packet delivery rate, and packet inter-reception time. In V2P scenarios, with and without line of sight, with varying vehicle speed, measurements using smartphones are performed and their results compared with those of OMNeT++ simulator. The results indicate, apart from the simulator’s accuracy, that the connection establishment time hinders the use of Wi-Fi Direct as a replacement to 802.11p. As an outcome of this observation, we evaluate a new transmission method for Wi-Fi Direct based on beacon stuffing, which mitigates the long connection establishment issue. View Full-Text
Keywords: VANETs; vehicular networks; connected vehicles; Wi-Fi Direct; Wi-Fi P2P; IEEE 802.11p; INET; OMNeT++ VANETs; vehicular networks; connected vehicles; Wi-Fi Direct; Wi-Fi P2P; IEEE 802.11p; INET; OMNeT++
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de Almeida, T.T.; Ribeiro Júnior, J.G.; Campista, M.E.M.; Costa, L.H.M.K. Wi-Fi Direct Performance Evaluation for V2P Communications. J. Sens. Actuator Netw. 2020, 9, 28.

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