VANET QoS-OLSR: QoS-based Clustering Protocol for Vehicular Ad Hoc Networks

• Post by: eargadmin
• 27 June 2021
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Abstract

In this paper, we address the problem of clustering in Vehicular Ad hoc Networks
(VANETs) using Quality of Service Optimized Link State Routing (QoS-OLSR) protocol. Several clustering algorithms have been proposed for VANET and MANET.
However, the mobility-based algorithms ignore the Quality of Service requirements
that are important for VANET safety, emergency, and multimedia services while the
QoS-based algorithms ignore the high speed mobility constraints since they are dedicated for Mobile Ad hoc Networks (MANETs). Our solution is a new QoS-based clustering algorithm that considers a tradeoff between QoS requirements and high speed
mobility constraints. The goal is to form stable clusters and maintain the stability during communications and link failures while satisfying the Quality of Service requirements. This is achieved by: (1) considering the high mobility metrics while computing
the QoS, (2) using Ant Colony Optimization for MPRs selection, and (3) using MPR
recovery algorithm able to select alternatives and keep the network connected in case
of link failures. Performance analysis and simulation results show that the proposed
model can maintain the network stability, reduce the End-to-End delay, increase the
packet delivery ratio, and reduce the communications overhead.