Performance enhancement in VANET with admission control and contention window adjustment
| dc.contributor.author | Tiwari, Vivek | |
| dc.contributor.supervisor | Cai, Lin | |
| dc.date.accessioned | 2012-09-10T22:12:34Z | |
| dc.date.available | 2012-09-10T22:12:34Z | |
| dc.date.copyright | 2012 | en_US |
| dc.date.issued | 2012-09-10 | |
| dc.degree.department | Department of Electrical and Computer Engineering | |
| dc.degree.level | Master of Applied Science M.A.Sc. | en_US |
| dc.description.abstract | 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. | en_US |
| dc.description.scholarlevel | Graduate | en_US |
| dc.identifier.uri | http://hdl.handle.net/1828/4262 | |
| dc.language | English | eng |
| dc.language.iso | en | en_US |
| dc.rights.temp | Available to the World Wide Web | en_US |
| dc.subject | mobile networks | en_US |
| dc.subject | vehicular ad hoc networks | en_US |
| dc.subject | transportation | en_US |
| dc.title | Performance enhancement in VANET with admission control and contention window adjustment | en_US |
| dc.type | Thesis | en_US |