An Enhanced Control Overhead Messages Reduction Algorithm in VANET

The mobility in Vehicular Ad-Hoc NETworks (VANETs) causes high topology changes and in turn leads to excessive control overhead messages and frequent link communication failures. Traditionally, clustering techniques have been used as the main solution to improve the stability of the clustered topology and to minimize the routing overhead messages generated due to the routing protocols. In the clustering techniques, the network is divided into multiple clusters and selecting one of the Cluster Members (CMs) as a Cluster Head (CH). Still, a problem occurs when the CMs periodically forwards of CM HELLO (CMHELLO) messages to the CH. Also, when the CH periodically broadcasts an CH ADvertiSement (CHADS) messages to announce itself to the CMs. Hence, minimizing control overhead messages in any cluster environment is an essential goal to efficiently use the network resources. In this paper, we propose an Enhanced Control Overhead messages Reduction Algorithm (ECORA) with the goal to reduce the CHADS messages that broadcasted by the CHs. Finally, we evaluate the performance of our proposed algorithm by comparing with other similar contributions.