Improving Reliability by Congestion Control in VANET

Abstract

VANET plays a key role in an optimized route between source and destination in the growth of newlinesmart cities around the world. The VANETs are focused on fewer network infrastructures. newlineDifferent VANET features, such as insecure networking, high volatility and network partitioning newlinehave allowed it more complicated to routing information within VANETs, thus dictating the newlineimplementation of reliable routing protocols. Routing is a very tedious activity in this network newlinebecause the place of vehicles is always changed location-wise. The analysis of the best route newlinemeasures communication performance, whereas routing protocols are useful for interacting and newlinedata routing. The provision of smart communication needs a study of VANET routing protocols. newlineVANET contains several variants of existing routing protocols. It allows cars to offer security newlinedata for vehicle-to-vehicle interaction (V2V) or vehicle to interaction for infrastructure (V2I). newlineThere are also high densities of vehicles where each vehicle transfers information with them, newlinewhich contribute to VANET congestion. To this end, the Medium Access Control (MAC) newlineprotocols were created to improve real-time connectivity between vehicles and roadside modules newlinewhile minimizing transmission mishaps. The key problems in the collision control system are newlinethe preservation of MAC connectivity due to the VANET characteristics. It also causes end-to- newlineend delay and packet loss during communication. The European Telecommunications Standard newlineInstitute (ETSI) has developed the system of decentralized congestion control (DCC) to newlineovercome these main challenges. newline