Cloud-assisted multi-tier hierarchical safety routing strategy for collision avoidance in vehicular ad hoc network
by V. Nalina; P. Jayarekha
International Journal of Vehicle Information and Communication Systems (IJVICS), Vol. 6, No. 3/4, 2021

Abstract: The Vehicular Adhoc Network (VANET) comprises a number of moving vehicles that establish wireless communication between them directly or using fixed infrastructure. The main intention of VANET is to protect human lives from a dangerous situation and avoid chain collisions by alerting vehicles through emergency messages. This paper proposes a Cloud-assisted Multi-tier Hierarchical Safety Routing (CM-HSR) strategy to avoid chain collisions with efficient resource usage. For effectively handling an emergency situation and network dynamism, the CM-HSR dynamically changes the multi-tier structure with the help of roadside infrastructures. To ensure reliable delivery with minimum redundant rate, the CM-HSR incorporates two mechanisms that are Accident severity level-based Dangerous region Formation (ADF) and Multi-criteria-based Decision Making (MDM). Finally, the simulation results demonstrate that the proposed CM-HSR attains better performance in terms of latency, duplicate packet, number of collisions, number of transmitted data packets, reachability, overhead and number of secondary collisions in evaluation.

Online publication date: Fri, 10-Dec-2021

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