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2007
ACM

Vehicular opportunistic communication under the microscope

11 years 1 months ago
Vehicular opportunistic communication under the microscope
We consider the problem of providing vehicular Internet access using roadside 802.11 access points. We build on previous work in this area [18, 8, 5, 11] with an extensive experimental analysis of protocol operation at a level of detail not previously explored. We report on data gathered with four capture devices from nearly 50 experimental runs conducted with vehicles on a rural highway. Our three primary contributions are: (1) We experimentally demonstrate that, on average, current protocols only achieve 50% of the overall throughput possible in this scenario. In particular, even with a streamlined connection setup procedure that does not use DHCP, high packet losses early in a vehicular connection are responsible for the loss of nearly 25% of overall throughput, 15% of the time. (2) We quantify the effects of ten problems caused by the mechanics of existing protocols that are responsible for this throughput loss; and (3) We recommend best practices for using vehicular opportunistic...
David Hadaller, Srinivasan Keshav, Tim Brecht, Shu
Added 24 Dec 2009
Updated 24 Dec 2009
Type Conference
Year 2007
Where MOBISYS
Authors David Hadaller, Srinivasan Keshav, Tim Brecht, Shubham Agarwal
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