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As an emerging technology, Vehicular ad hoc networks (VANETs) aim to increase safety and comfort of driving in highways and urban streets. The conventional measures taken have a positive effect on the decline of casualties and injuries incurred by the accidents. But the number of incidents in the traffic still remains stable. VANETs intend to overcome this problem by providing additional information...
Geocast routing in vehicular ad-hoc networks has become an area of interest for researchers as it is an essential part of ITS (intelligent transport system). Many vehicular applications require geocast i.e. fast and reliable warning message dissemination to particular regions. Several proposed approaches, consider a geocast region as a circular area with a center point and a radius. However, in case...
Vehicular ad hoc networks (VANETs) support safety applications to prevent car accidents. Beacons are periodically broadcasted for various safety applications but very sensitive to collision and delay. In this paper, we propose a new transmission scheme, called Bi-Beacon, which transmits two levels of power to reduce collision and maintain maximum transmission range. High collision problem still remains...
Vehicular communications are important to ensure emergency messages are transmitted on time to prevent accidents. Therefore, in recent years, various standardization bodies and automobile companies have developed vehicular ad hoc network (VANET) to ensure public road safety. The current IEEE802.11p schemes utilize only traffic type to categorize priority levels. However, accidents are prone to occur...
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