A Cluster Based Task Allocation for Maximizing Reliability Considering Fault Tolerent in VANET

Clustering in vehicular ad hoc network is one of the control scheme used to make VANET global topology less dynamic. Many of the VANET clustering methods are derived from mobile ad hoc networks (MANET). However, VANET nodes are characterized by their high mobility, and the existence of VANET nodes in the same geographic proximity does not mean that they exhibit the same mobility patterns. Therefore, VANET clustering schemes should take into consideration the degree of the speed difference among neighboring nodes to produce relatively stable clustering structure. In this paper, we introduce a new clustering technique suitable for the VANET environment on highways with the aim of enhancing the stability of the network topology. This technique takes the speed difference as a parameter to create relatively stable cluster structure. The technique has been compared to the previous research on different parameters like end to end delay, packet delivery, latency, packet reliability rate, packet stability rate etc. such that all the parameters has shown the improvement with different percentages. Finally, proposed routing protocol QOS-AODV achieves Packet delivery has improved by 21.22%, end to end delay has improved by 54.77%, and latency has improved by 31.40%.