• Priyanka A
• Marrynal S Eastaff

The future vehicular ad hoc network (VANET) application will be an event driven and require events of different types to be delivered to moving vehicles within some specified time. Hence we propose a publish-subscribe based event notification framework that uses roadside units (RSUs) to deliver events to vehicles that subscribe to them within the validity periods of both the subscriptions and the events. The RSU will disseminate only a finite number of events at a time and has a cost associated with it. The referred two scheduling problems to schedule the dissemination of events from RSUs are formulated. The main problem is to maximize only the number of subscriptions that are matched to some events. The next problem is in addition to maximizing the number of subscriptions matched, also aims to minimize the total cost of disseminating the events. The designed offline and online algorithms for the problems that a service provider can execute to schedule event disseminations from the RSUs. Detailed simulation results are presented to show that the algorithms are able to match a high percentage of subscriptions with low average event dissemination cost for some realistic city traffic scenarios.

VPN Security, ISDN, IPSec, Intrusion Deduction

"Performance Improvement of Cluster-Based Routing Protocol in VANET", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.168-171, March-2019, Available :http://www.jetir.org/papers/JETIR1903129.pdf

"Performance Improvement of Cluster-Based Routing Protocol in VANET", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp168-171, March-2019, Available at : http://www.jetir.org/papers/JETIR1903129.pdf