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Measurement-based study of vehicle to Internet opportunistic communications

Abstract : Advances in wireless communication technologies as well as the low cost of wireless equipments have increased the ubiquity of network connectivity, illustrated by the large deployment of IEEE 802.11 access points (APs). Anytime, anywhere, users are being connected to networks and desire consequently more services on their mobile devices. The Internet access from vehicles, in particular short lived connections, to roadside APs is a one of challenging services in this direction. Meanwhile, we wonder if those APs could offer Internet connectivity to vehicular networks especially for delay-tolerant applications. A preliminary requirement to make this possible is to provide the vehicle communication router with a list of available APs in its neighborhood. In this paper, we introduce ScanCar, a layered measurement system for wireless infrastructure discovery, which is integrated in the vehicle's router to build and maintain a database of WIFI APs in the vehicle's range. Then, we report results of a real measurement study conducted on the data set ScanCar has provided through wardriving in different regions of the French Riviera. For instance, in Antibes Juan-les-Pins, which is a residential city, our findings show that the scan duration of the 2369 discovered APs, varies between 200 ms and 664 ms. Despite that among those APs only 8.2% were not protected, we found that on average, clients can potentially remain in at least one AP's coverage for 23.86 seconds which can be considered as a very promising result toward the development of services for vehicle to Internet opportunistic communication.
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https://hal.inria.fr/inria-00380532
Contributor : Ichrak Amdouni <>
Submitted on : Sunday, May 3, 2009 - 2:09:31 PM
Last modification on : Thursday, January 11, 2018 - 6:19:28 AM
Long-term archiving on: : Monday, October 15, 2012 - 9:51:26 AM

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  • HAL Id : inria-00380532, version 1

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Ichrak Amdouni, Fethi Filali. Measurement-based study of vehicle to Internet opportunistic communications. 2009. ⟨inria-00380532⟩

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