Vehicular Ad Hoc Networks (VANET), a derivative of mobile networks, has the
capability to increase the safety, e ciency and comfort of transportation systems,
and provide users on-the-road Internet connectivity. Because of its impetus and
signi cance in practical scenarios, it becomes a sought after topic in both industry and
academia. In this thesis, we focus on the vehicle-to-infrastructure (V2I) drive-thru
Internet services in a highway scenario. The road side unit (RSU) along a highway
can provide network services for vehicles within the coverage. To enhance the network
performance, we propose two strategies. First, to ensure a high network throughput,
the RSU uses an admission control strategy to limit the competition among vehicles,
and avoid the waste of channel time to the low-data-rate users. Second, based on
the vehicle density, we also propose a contention window (CW) adjustment strategy
which can reduce the collision probability when the network is congested, and reduce
the idle time otherwise. Extensive simulations using network simulator (NS-2) are
given, which demonstrate the e ectiveness of the proposed solutions. / Graduate
| Identifer | oai:union.ndltd.org:uvic.ca/oai:dspace.library.uvic.ca:1828/4262 |
| Date | 10 September 2012 |
| Creators | Tiwari, Vivek |
| Contributors | Cai, Lin |
| Source Sets | University of Victoria |
| Language | English, English |
| Detected Language | English |
| Type | Thesis |
| Rights | Available to the World Wide Web |
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