V ANETs are the self-organized networks, composed of
mobile nodes capable of communicating in infrastructure less
environments. Advancement in wireless technologies [14] has
made it possible for vehicles [11] to communicate with other
vehicles without installment of any infrastructure; thus
reducing deployment cost.
V ANETs support a number of applications [8, 13, 14] ranging
from the performance of transportation system to facilitate the
safety on the roads. They also support comfort applications
such as chat, web browsing, and video and game downloads.
The concept of V ANETs is derived from Mobile Ad-hoc
Networks (MANETs). MANETs are composed of mobile
nodes which communicate in infrastructure less environment.
In MANETs, every node plays two roles, data terminals as
well as data transfer equipments [17]. V ANETs follow the
same idea of MANETs except that the nodes are vehicles. As
the vehicles have greater speed and moves on specific paths
like roads, so V ANETs have different characteristics than
MANETs which make them much more challenging.
V ANETs are highly dynamic and their topology frequently
changed due to high speed of vehicles, causes the network to
be partitioned into several parts. One solution is to deploy the
access points along the road. Vehicles will not be able to communicate
if the distance between them is more than
V ANETs are the self-organized networks, composed ofmobile nodes capable of communicating in infrastructure lessenvironments. Advancement in wireless technologies [14] hasmade it possible for vehicles [11] to communicate with othervehicles without installment of any infrastructure; thusreducing deployment cost.V ANETs support a number of applications [8, 13, 14] rangingfrom the performance of transportation system to facilitate thesafety on the roads. They also support comfort applicationssuch as chat, web browsing, and video and game downloads.The concept of V ANETs is derived from Mobile Ad-hocNetworks (MANETs). MANETs are composed of mobilenodes which communicate in infrastructure less environment.In MANETs, every node plays two roles, data terminals aswell as data transfer equipments [17]. V ANETs follow thesame idea of MANETs except that the nodes are vehicles. Asthe vehicles have greater speed and moves on specific pathslike roads, so V ANETs have different characteristics thanMANETs which make them much more challenging.V ANETs are highly dynamic and their topology frequentlychanged due to high speed of vehicles, causes the network tobe partitioned into several parts. One solution is to deploy theaccess points along the road. Vehicles will not be able to communicateif the distance between them is more than
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