Network performance in IEEE 802.11 and IEEE 802.11p cluster based on VANET

Vehicular ad hoc networks (VANET) are an emerging class of the wireless networks that have emerged because of the recent advances in the wireless technology. VANET is an enhanced form of the Mobile Ad-hoc Network (MANET). The IEEE 802.11standard is based on CSMA/CD and used in both MANET and VANET. An enhanced version IEEE 802.11p is developed for VANET. VANET is a special type of an Intelligent Transport System (ITS), where the mobile nodes are cars, two wheelers, trucks, buses etc., that move on well organized and predefined roads in both the directions at a very high speed. For following the traffic rules, the vehicles provide communication with each other directly (Inter Vehicle Communication-IVC) or indirectly through the Road Side Unit (RSU). Usually thevehicles, which move outside the city area, do not get the response from the RSUas its availability is limited in that area. An attempt has been made to create a new clustering concept for this purpose, which can be applied to a newly created Simple High Way Mobility Model, to increase the speed of the vehicle communication. Thus, this paper focuses the performance of the Packet Delivery Time, Packet Delay Time, Throughput and end to end delay using IEEE 802.11p. This is compared with the values obtained for IEEE802.11 in VANET Environment.